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KP Region

Chun R Chao, PhD, MS

TitleInvestigator
InstitutionKaiser Permanente Southern California
DepartmentDepartment of Research and Evaluation
ORCID ORCID Icon0000-0002-6072-4954 Additional info
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    Collapse Overview 
    Collapse overview
    I am interested in the following research areas: (1) identification of risk and protective factors for cancer; (2) identification of prognostic biomarkers for cancer disease progression; (3) identification of predictors for adverse events associated with cancer treatment; and (4) utilization of HPV vaccine. Currently, I am leading several cancer epidemiology projects at Kaiser Permanente Southern California (KPSC), with an emphasis on non-Hodgkin lymphoma and HIV-related malignancies. I am particularly interested in tissue-based research. In my project of HIV-related diffuse large B-cell lymphoma, we performed tissue microarray and IHC staining to investigate the prognostic significance of several viral markers, cell cycle regulators and anti-apoptotic proteins, utilizing the comprehensive clinical information available at KPSC. My other studies aim at studying the risk/protective factors for cancer development, including the role of certain dietary intake, pharmacological agents and immunomodulation.

    Collapse Research 
    Collapse research activities and funding
    R01CA134234     (CHAO, CHUN R)Sep 24, 2008 - Jul 31, 2013
    NIH/NCI
    Prognostic Markers for HIV-Postive Diffuse Large B-Cell Lymphoma
    Role: Principal Investigator

    R01CA181242     (CHAO, CHUN R.)Jan 2, 2015 - Dec 31, 2019
    NIH/NCI
    Identification of DNA methylation markers for risk of metastasis in localized pro
    Role: Principal Investigator

    R21CA198042     (CHAO, CHUN R.)Jul 15, 2016 - Jun 30, 2018
    NIH/NCI
    Follow-up care and preventive service use among survivors of adolescent and young adult cancer.
    Role: Principal Investigator

    Collapse Bibliographic 
    Collapse selected publications
    Publications listed below are automatically derived from MEDLINE/PubMed and other sources, which might result in incorrect or missing publications. Faculty can login to make corrections and additions.
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    1. Hahn EE, Wu YL, Munoz-Plaza CE, Garcia Delgadillo J, Cooper RM, Chao CR. Use of recommended posttreatment services for adolescent and young adult survivors of Hodgkin lymphoma. Cancer. 2019 May 01; 125(9):1558-1567. PMID: 30620388.
      View in: PubMed
    2. Kamineni A, Tiro JA, Beaber EF, Silverberg MJ, Wheeler CM, Chao CR, Chubak J, Skinner CS, Corley DA, Kim JJ, Balasubramanian BA, Paul Doria-Rose V. Cervical cancer screening research in the PROSPR I consortium: Rationale, methods and baseline findings from a US cohort. Int J Cancer. 2019 Mar 15; 144(6):1460-1473. PMID: 30353911.
      View in: PubMed
    3. Horberg MA, Oakes AH, Hurley LB, Towner WJ, Chao CR, Silverberg MJ, Chantra JQ, Ellis CG, Quesenberry CP. Association of raltegravir use with long-term health outcomes in HIV-infected patients: an observational post-licensure safety study in a large integrated healthcare system. HIV Clin Trials. 2018 10; 19(5):177-187. PMID: 30370835.
      View in: PubMed
    4. Li Y, Family L, Chen LH, Page JH, Klippel Z, Xu L, Chao CR. Value of incorporating newly identified risk factors into risk prediction for chemotherapy-induced febrile neutropenia. Cancer Med. 2018 Aug; 7(8):4121-4131. PMID: 29953736.
      View in: PubMed
    5. Becerra-Culqui TA, Lonky NM, Chen Q, Chao CR. Patterns and correlates of cervical cancer screening initiation in a large integrated health care system. Am J Obstet Gynecol. 2018 04; 218(4):429.e1-429.e9. PMID: 29277629.
      View in: PubMed
    6. Sy LS, Meyer KI, Klein NP, Chao C, Velicer C, Cheetham TC, Ackerson BK, Slezak JM, Takhar HS, Hansen J, Deosaransingh K, Liaw KL, Jacobsen SJ. Postlicensure safety surveillance of congenital anomaly and miscarriage among pregnancies exposed to quadrivalent human papillomavirus vaccine. Hum Vaccin Immunother. 2018 02 01; 14(2):412-419. PMID: 29140750.
      View in: PubMed
    7. Slezak J, Meyer K, Sy LS, Chao C, Takhar H, Ackerson B, Cheetham TC, Jacobsen S. An imputation method for calculating and comparing autoimmune disease incidence using partial case review. Vaccine. 2017 12 04; 35(48 Pt B):6672-6675. PMID: 29079102.
      View in: PubMed
    8. Chao C, Silverberg MJ, Chen LH, Xu L, Martínez-Maza O, Abrams DI, Zha HD, Haque R, Said J. Novel tumor markers provide improved prediction of survival after diagnosis of human immunodeficiency virus (HIV)-related diffuse large B-cell lymphoma. Leuk Lymphoma. 2018 02; 59(2):321-329. PMID: 28610450.
      View in: PubMed
    9. Epstein MM, Divine G, Chao CR, Wells KE, Feigelson HS, Scholes D, Roblin D, Ulcickas Yood M, Engel LS, Taylor A, Fortuny J, Habel LA, Johnson CC. Statin use and risk of multiple myeloma: An analysis from the cancer research network. Int J Cancer. 2017 08 01; 141(3):480-487. PMID: 28425616.
      View in: PubMed
    10. Marcus JL, Leyden WA, Chao CR, Horberg MA, Klein DB, Quesenberry CP, Towner WJ, Silverberg MJ. Immunodeficiency, AIDS-related pneumonia, and risk of lung cancer among HIV-infected individuals. AIDS. 2017 04 24; 31(7):989-993. PMID: 28252529.
      View in: PubMed
    11. Kawatkar AA, Farias AJ, Chao C, Chen W, Barron R, Vogl FD, Chandler DB. Hospitalizations, outcomes, and management costs of febrile neutropenia in patients from a managed care population. Support Care Cancer. 2017 09; 25(9):2787-2795. PMID: 28397022.
      View in: PubMed
    12. Hoffmann TJ, Passarelli MN, Graff RE, Emami NC, Sakoda LC, Jorgenson E, Habel LA, Shan J, Ranatunga DK, Quesenberry CP, Chao CR, Ghai NR, Aaronson D, Presti J, Nordström T, Wang Z, Berndt SI, Chanock SJ, Mosley JD, Klein RJ, Middha M, Lilja H, Melander O, Kvale MN, Kwok PY, Schaefer C, Risch N, Van Den Eeden SK, Witte JS. Genome-wide association study of prostate-specific antigen levels identifies novel loci independent of prostate cancer. Nat Commun. 2017 01 31; 8:14248. PMID: 28139693.
      View in: PubMed
    13. Ackerson B, Hechter R, Sidell M, Sy LS, Slezak J, Chao C, Patel N, Tseng HF, Jacobsen S. Human papillomavirus vaccine series completion in boys before and after recommendation for routine immunization. Vaccine. 2017 02 07; 35(6):897-902. PMID: 28094077.
      View in: PubMed
    14. Chao C, Silverberg MJ, Becerra TA, Corley DA, Jensen CD, Chen Q, Quinn VP. Human papillomavirus vaccination and subsequent cervical cancer screening in a large integrated healthcare system. Am J Obstet Gynecol. 2017 Feb; 216(2):151.e1-151.e9. PMID: 27746152.
      View in: PubMed
    15. Marcus JL, Baxter R, Leyden WA, Muthulingam D, Yee A, Horberg MA, Klein DB, Towner WJ, Chao CR, Quesenberry CP, Silverberg MJ. Invasive Pneumococcal Disease Among HIV-Infected and HIV-Uninfected Adults in a Large Integrated Healthcare System. AIDS Patient Care STDS. 2016 10; 30(10):463-470. PMID: 27749111.
      View in: PubMed
    16. Marcus JL, Chao CR, Leyden WA, Xu L, Quesenberry CP, Klein DB, Towner WJ, Horberg MA, Silverberg MJ. Narrowing the Gap in Life Expectancy Between HIV-Infected and HIV-Uninfected Individuals With Access to Care. J Acquir Immune Defic Syndr. 2016 09 01; 73(1):39-46. PMID: 27028501.
      View in: PubMed
    17. Mack JW, Cannavale K, Sattayapiwat O, Cheung B, Chen LH, Cooper RM, Chao CR. Care in the Final Month of Life among Adolescent and Young Adult Cancer Patients in Kaiser Permanente Southern California. J Palliat Med. 2016 11; 19(11):1136-1141. PMID: 27482745.
      View in: PubMed
    18. Family L, Xu L, Xu H, Cannavale K, Sattayapiwat O, Page JH, Bohac C, Chao C. The effect of chemotherapy-induced anemia on dose reduction and dose delay. Support Care Cancer. 2016 10; 24(10):4263-71. PMID: 27167627.
      View in: PubMed
    19. Xu H, Xu L, Page JH, Cannavale K, Sattayapiwat O, Rodriguez R, Chao C. Incidence of anemia in patients diagnosed with solid tumors receiving chemotherapy, 2010-2013. Clin Epidemiol. 2016; 8:61-71. PMID: 27186078.
      View in: PubMed
    20. Marcus JL, Neugebauer RS, Leyden WA, Chao CR, Xu L, Quesenberry CP, Klein DB, Towner WJ, Horberg MA, Silverberg MJ. Use of Abacavir and Risk of Cardiovascular Disease Among HIV-Infected Individuals. J Acquir Immune Defic Syndr. 2016 Apr 01; 71(4):413-9. PMID: 26536316.
      View in: PubMed
    21. Chao C, Xu L, Bhatia S, Cooper R, Brar S, Wong FL, Armenian SH. Cardiovascular Disease Risk Profiles in Survivors of Adolescent and Young Adult (AYA) Cancer: The Kaiser Permanente AYA Cancer Survivors Study. J Clin Oncol. 2016 05 10; 34(14):1626-33. PMID: 26951318.
      View in: PubMed
    22. Hudson SM, Rondinelli J, Glenn BA, Preciado M, Chao C. Human papillomavirus vaccine series completion: Qualitative information from providers within an integrated healthcare organization. Vaccine. 2016 06 24; 34(30):3515-21. PMID: 26947497.
      View in: PubMed
    23. Chao C, Xu L, Bell E, Cooper R, Mueller L. Long-term Health Outcomes in Survivors of Childhood Cancer Diagnosed Between 1990 and 2000 in a Large US Integrated Health Care System. J Pediatr Hematol Oncol. 2016 Mar; 38(2):123-30. PMID: 26808371.
      View in: PubMed
    24. Xu L, Xu H, Cannavale K, Sattayapiwat O, Rodriguez R, Page JH, Chao C. Trends in anemia treatment among patients with five non-myeloid malignancies treated with chemotherapy in a large integrated health care delivery system in California, 2000-2013. Support Care Cancer. 2016 07; 24(7):2989-98. PMID: 26872791.
      View in: PubMed
    25. Armenian SH, Xu L, Ky B, Sun C, Farol LT, Pal SK, Douglas PS, Bhatia S, Chao C. Cardiovascular Disease Among Survivors of Adult-Onset Cancer: A Community-Based Retrospective Cohort Study. J Clin Oncol. 2016 Apr 01; 34(10):1122-30. PMID: 26834065.
      View in: PubMed
    26. Hechter RC, Chao CR, Sidell MA, Sy LS, Ackerson BK, Slezak JM, Patel NJ, Tseng HF, Jacobsen SJ. Quadrivalent Human Papillomavirus Vaccine Initiation in Boys Before and Since Routine Use: Southern California, 2009-2013. Am J Public Health. 2015 Dec; 105(12):2549-56. PMID: 26469643.
      View in: PubMed
    27. Ackerson BK, Sy LS, Slezak J, Chao CR, Hechter RC, Takhar HS, Jacobsen SJ. Unmasking in an observational vaccine safety study: Using type 2 diabetes mellitus as an example. Vaccine. 2015 Nov 17; 33(46):6224-6. PMID: 26440925.
      View in: PubMed
    28. Chao C, Xu L, Silverberg MJ, Martínez-Maza O, Chen LH, Castor B, Abrams DI, Zha HD, Haque R, Said J. Stromal immune infiltration in HIV-related diffuse large B-cell lymphoma is associated with HIV disease history and patient survival. AIDS. 2015 Sep 24; 29(15):1943-51. PMID: 26355571.
      View in: PubMed
    29. Mack JW, Chen LH, Cannavale K, Sattayapiwat O, Cooper RM, Chao CR. End-of-Life Care Intensity Among Adolescent and Young Adult Patients With Cancer in Kaiser Permanente Southern California. JAMA Oncol. 2015 Aug; 1(5):592-600. PMID: 26181778.
      View in: PubMed
    30. Hoffmann TJ, Van Den Eeden SK, Sakoda LC, Jorgenson E, Habel LA, Graff RE, Passarelli MN, Cario CL, Emami NC, Chao CR, Ghai NR, Shan J, Ranatunga DK, Quesenberry CP, Aaronson D, Presti J, Wang Z, Berndt SI, Chanock SJ, McDonnell SK, French AJ, Schaid DJ, Thibodeau SN, Li Q, Freedman ML, Penney KL, Mucci LA, Haiman CA, Henderson BE, Seminara D, Kvale MN, Kwok PY, Schaefer C, Risch N, Witte JS. A large multiethnic genome-wide association study of prostate cancer identifies novel risk variants and substantial ethnic differences. Cancer Discov. 2015 Aug; 5(8):878-91. PMID: 26034056.
      View in: PubMed
    31. Chao C, Chiu V, Xu L, Cooper RM. Survival Differences by Race/Ethnicity and Neighborhood Socioeconomic Status in Adolescents and Young Adults Diagnosed with Non-Hodgkin Lymphoma. J Adolesc Young Adult Oncol. 2015 Jun; 4(2):76-83. PMID: 26812555.
      View in: PubMed
    32. Marcus JL, Leyden WA, Chao CR, Xu L, Quesenberry CP, Tien PC, Klein DB, Towner WJ, Horberg MA, Silverberg MJ. Differences in Response to Antiretroviral Therapy by Sex and Hepatitis C Infection Status. AIDS Patient Care STDS. 2015 Jul; 29(7):370-8. PMID: 26061798.
      View in: PubMed
    33. Marcus JL, Chao C, Leyden WA, Xu L, Yu J, Horberg MA, Klein D, Towner WJ, Quesenberry CP, Abrams DI, Silverberg MJ. Survival among HIV-infected and HIV-uninfected individuals with common non-AIDS-defining cancers. Cancer Epidemiol Biomarkers Prev. 2015 Aug; 24(8):1167-73. PMID: 25713023.
      View in: PubMed
    34. Klein DB, Leyden WA, Xu L, Chao CR, Horberg MA, Towner WJ, Hurley LB, Marcus JL, Quesenberry CP, Silverberg MJ. Declining relative risk for myocardial infarction among HIV-positive compared with HIV-negative individuals with access to care. Clin Infect Dis. 2015 Apr 15; 60(8):1278-80. PMID: 25595743.
      View in: PubMed
    35. Chao C, Silverberg MJ, Xu L, Chen LH, Castor B, Martínez-Maza O, Abrams DI, Zha HD, Haque R, Said J. A comparative study of molecular characteristics of diffuse large B-cell lymphoma from patients with and without human immunodeficiency virus infection. Clin Cancer Res. 2015 Mar 15; 21(6):1429-37. PMID: 25589617.
      View in: PubMed
    36. Langer-Gould A, Qian L, Tartof SY, Brara SM, Jacobsen SJ, Beaber BE, Sy LS, Chao C, Hechter R, Tseng HF. Vaccines and the risk of multiple sclerosis and other central nervous system demyelinating diseases. JAMA Neurol. 2014 Dec; 71(12):1506-13. PMID: 25329096.
      View in: PubMed
    37. Chao C, Preciado M, Slezak J, Xu L. A randomized intervention of reminder letter for human papillomavirus vaccine series completion. J Adolesc Health. 2015 Jan; 56(1):85-90. PMID: 25438965.
      View in: PubMed
    38. Porter KR, Chao C, Quinn VP, Hsu JW, Jacobsen SJ. Variability in date of prostate cancer diagnosis: a comparison of cancer registry, pathology report, and electronic health data sources. Ann Epidemiol. 2014 Nov; 24(11):855-60. PMID: 25282324.
      View in: PubMed
    39. Marcus JL, Leyden WA, Chao CR, Chow FC, Horberg MA, Hurley LB, Klein DB, Quesenberry CP, Towner WJ, Silverberg MJ. HIV infection and incidence of ischemic stroke. AIDS. 2014 Aug 24; 28(13):1911-9. PMID: 24937309.
      View in: PubMed
    40. Marcus JL, Chao CR, Leyden WA, Xu L, Klein DB, Horberg MA, Towner WJ, Quesenberry CP, Abrams DI, Van Den Eeden SK, Silverberg MJ. Prostate cancer incidence and prostate-specific antigen testing among HIV-positive and HIV-negative men. J Acquir Immune Defic Syndr. 2014 Aug 15; 66(5):495-502. PMID: 24820107.
      View in: PubMed
    41. Chao C, Page JH, Yang SJ, Rodriguez R, Huynh J, Chia VM. History of chronic comorbidity and risk of chemotherapy-induced febrile neutropenia in cancer patients not receiving G-CSF prophylaxis. Ann Oncol. 2014 Sep; 25(9):1821-9. PMID: 24915871.
      View in: PubMed
    42. Chao C, Rodriguez R, Page JH, Yang SJ, Huynh J, Chia VM. History of chronic comorbidity and risk of chemotherapy-induced febrile neutropenia in patients with non-Hodgkin lymphoma not receiving granulocyte colony-stimulating factor prophylaxis. Leuk Lymphoma. 2015 Jan; 56(1):72-9. PMID: 24684228.
      View in: PubMed
    43. Silverberg MJ, Leyden WA, Xu L, Horberg MA, Chao CR, Towner WJ, Hurley LB, Quesenberry CP, Klein DB. Immunodeficiency and risk of myocardial infarction among HIV-positive individuals with access to care. J Acquir Immune Defic Syndr. 2014 Feb 01; 65(2):160-6. PMID: 24442222.
      View in: PubMed
    44. Chao C, Chi M, Preciado M, Black MH. Methylation markers for prostate cancer prognosis: a systematic review. Cancer Causes Control. 2013 Sep; 24(9):1615-41. PMID: 23797237.
      View in: PubMed
    45. Hechter RC, Chao C, Sy LS, Ackerson BK, Slezak JM, Sidell MA, Jacobsen SJ. Quadrivalent human papillomavirus vaccine uptake in adolescent boys and maternal utilization of preventive care and history of sexually transmitted infections. Am J Public Health. 2013 Sep; 103(9):e63-8. PMID: 23865707.
      View in: PubMed
    46. Chao C, Chiu V, Mueller LA, Cooper R. Exploring the Feasibility of Establishing a Retrospective Cohort of Survivors of Adolescent and Young Adult Cancer to Study Long-Term Health Outcomes in an Integrated Managed Care Environment. J Adolesc Young Adult Oncol. 2013 Jun; 2(2):59-65. PMID: 23781402.
      View in: PubMed
    47. Chen LH, Quinn V, Xu L, Gould MK, Jacobsen SJ, Koebnick C, Reynolds K, Hechter RC, Chao CR. The accuracy and trends of smoking history documentation in electronic medical records in a large managed care organization. Subst Use Misuse. 2013 Jun; 48(9):731-42. PMID: 23621678.
      View in: PubMed
    48. Chia VM, Page JH, Rodriguez R, Yang SJ, Huynh J, Chao C. Chronic comorbid conditions associated with risk of febrile neutropenia in breast cancer patients treated with chemotherapy. Breast Cancer Res Treat. 2013 Apr; 138(2):621-31. PMID: 23468242.
      View in: PubMed
    49. Chao C, Jacobsen SJ, Xu L, Wallner LP, Porter KR, Williams SG. Use of statins and prostate cancer recurrence among patients treated with radical prostatectomy. BJU Int. 2013 May; 111(6):954-62. PMID: 23464862.
      View in: PubMed
    50. Chao C, Williams SG, Xu L, Chen J, Wallner LP, Porter KR, Jacobsen SJ. Statin therapy is not associated with prostate cancer recurrence among patients who underwent radiation therapy. Cancer Lett. 2013 Jul 10; 335(1):214-8. PMID: 23419526.
      View in: PubMed
    51. Porter KR, Hsu JW, Chien GW, Xiang AH, Jung H, Chao C, Jacobsen SJ. Racial and ethnic differences in time to treatment for patients with localized prostate cancer. Urology. 2013 Feb; 81(2):283-7. PMID: 23374784.
      View in: PubMed
    52. Wallner LP, Frencher SK, Hsu JW, Chao CR, Nichol MB, Loo RK, Jacobsen SJ. Changes in serum prostate-specific antigen levels and the identification of prostate cancer in a large managed care population. BJU Int. 2013 Jun; 111(8):1245-52. PMID: 23320750.
      View in: PubMed
    53. Klein NP, Hansen J, Chao C, Velicer C, Emery M, Slezak J, Lewis N, Deosaransingh K, Sy L, Ackerson B, Cheetham TC, Liaw KL, Takhar H, Jacobsen SJ. Safety of quadrivalent human papillomavirus vaccine administered routinely to females. Arch Pediatr Adolesc Med. 2012 Dec; 166(12):1140-8. PMID: 23027469.
      View in: PubMed
    54. Chao C, Leyden WA, Xu L, Horberg MA, Klein D, Towner WJ, Quesenberry CP, Abrams DI, Silverberg MJ. Exposure to antiretroviral therapy and risk of cancer in HIV-infected persons. AIDS. 2012 Nov 13; 26(17):2223-31. PMID: 22951631.
      View in: PubMed
    55. Chao C, Jacobsen SJ. Evaluation of autoimmune safety signal in observational vaccine safety studies. Hum Vaccin Immunother. 2012 Sep; 8(9):1302-4. PMID: 22871958.
      View in: PubMed
    56. Strauss JA, Chao CR, Kwan ML, Ahmed SA, Schottinger JE, Quinn VP. Identifying primary and recurrent cancers using a SAS-based natural language processing algorithm. J Am Med Inform Assoc. 2013 Mar-Apr; 20(2):349-55. PMID: 22822041.
      View in: PubMed
    57. Hechter RC, Chao C, Jacobsen SJ, Slezak JM, Quinn VP, Van Den Eeden SK, Tseng HF. Clinical effectiveness of pneumococcal polysaccharide vaccine in men: California Men's Health Study. Vaccine. 2012 Aug 17; 30(38):5625-30. PMID: 22789510.
      View in: PubMed
    58. Towner WJ, Xu L, Leyden WA, Horberg MA, Chao CR, Tang B, Klein DB, Hurley LB, Quesenberry CP, Silverberg MJ. The effect of HIV infection, immunodeficiency, and antiretroviral therapy on the risk of hepatic dysfunction. J Acquir Immune Defic Syndr. 2012 Jul 01; 60(3):321-7. PMID: 22343179.
      View in: PubMed
    59. Hechter RC, Chao C, Li Q, Jacobsen SJ, Tseng HF. Correlates for second-dose varicella vaccination in school-age children in a managed care organization in California. Pediatr Infect Dis J. 2012 Jul; 31(7):752-5. PMID: 22466321.
      View in: PubMed
    60. Chao C, Silverberg MJ, Martínez-Maza O, Chi M, Abrams DI, Haque R, Zha HD, McGuire M, Xu L, Said J. Epstein-Barr virus infection and expression of B-cell oncogenic markers in HIV-related diffuse large B-cell Lymphoma. Clin Cancer Res. 2012 Sep 01; 18(17):4702-12. PMID: 22711707.
      View in: PubMed
    61. Jacobsen SJ, Sy LS, Ackerson BK, Chao CR, Slezak JM, Cheetham TC, Takhar HS, Velicer CM, Hansen J, Klein NP. An unmasking phenomenon in an observational post-licensure safety study of adolescent girls and young women. Vaccine. 2012 Jun 29; 30(31):4585-7. PMID: 22580356.
      View in: PubMed
    62. Chao C, Tang B, Hurley L, Silverberg MJ, Towner W, Preciado M, Horberg M. Risk factors for short-term virologic outcomes among HIV-infected patients undergoing regimen switch of combination antiretroviral therapy. AIDS Res Hum Retroviruses. 2012 Dec; 28(12):1630-6. PMID: 22475276.
      View in: PubMed
    63. Chao C, Tang B, Towner W, Silverberg MJ, Hurley L, Horberg M. Short-term clinical outcomes among treatment-experienced HIV-positive patients with early low level viremia. AIDS Patient Care STDS. 2012 May; 26(5):253-5. PMID: 22424146.
      View in: PubMed
    64. Koebnick C, Langer-Gould AM, Gould MK, Chao CR, Iyer RL, Smith N, Chen W, Jacobsen SJ. Sociodemographic characteristics of members of a large, integrated health care system: comparison with US Census Bureau data. Perm J. 2012; 16(3):37-41. PMID: 23012597.
      View in: PubMed
    65. Silverberg MJ, Chao C, Leyden WA, Xu L, Horberg MA, Klein D, Towner WJ, Dubrow R, Quesenberry CP, Neugebauer RS, Abrams DI. HIV infection, immunodeficiency, viral replication, and the risk of cancer. Cancer Epidemiol Biomarkers Prev. 2011 Dec; 20(12):2551-9. PMID: 22109347.
      View in: PubMed
    66. Chao C, Klein NP, Velicer CM, Sy LS, Slezak JM, Takhar H, Ackerson B, Cheetham TC, Hansen J, Deosaransingh K, Emery M, Liaw KL, Jacobsen SJ. Surveillance of autoimmune conditions following routine use of quadrivalent human papillomavirus vaccine. J Intern Med. 2012 Feb; 271(2):193-203. PMID: 21973261.
      View in: PubMed
    67. Chao C, Xu L, Abrams DI, Towner WJ, Horberg MA, Leyden WA, Silverberg MJ. HMG-CoA reductase inhibitors (statins) use and risk of non-Hodgkin lymphoma in HIV-positive persons. AIDS. 2011 Sep 10; 25(14):1771-7. PMID: 21681055.
      View in: PubMed
    68. Hechter RC, Chao C, Li Q, Jacobsen SJ, Tseng HF. Second-dose varicella vaccination coverage in children and adolescents in a managed care organization in California, 2006-2009. Pediatr Infect Dis J. 2011 Aug; 30(8):705-7. PMID: 21283048.
      View in: PubMed
    69. Chao C, Li Q, Zhang F, White E. Alcohol consumption and risk of lung cancer in the VITamins And Lifestyle Study. Nutr Cancer. 2011; 63(6):880-8. PMID: 21714684.
      View in: PubMed
    70. Chao C, Song Y, Cook N, Tseng CH, Manson JE, Eaton C, Margolis KL, Rodriguez B, Phillips LS, Tinker LF, Liu S. The lack of utility of circulating biomarkers of inflammation and endothelial dysfunction for type 2 diabetes risk prediction among postmenopausal women: the Women's Health Initiative Observational Study. Arch Intern Med. 2010 Sep 27; 170(17):1557-65. PMID: 20876407.
      View in: PubMed
    71. Chao C, Xu L, Abrams D, Leyden W, Horberg M, Towner W, Klein D, Tang B, Silverberg M. Survival of non-Hodgkin lymphoma patients with and without HIV infection in the era of combined antiretroviral therapy. AIDS. 2010 Jul 17; 24(11):1765-70. PMID: 20453630.
      View in: PubMed
    72. Tseng HF, Smith N, Marcy SM, Sy LS, Chao CR, Jacobsen SJ. Risk factors of herpes zoster among children immunized with varicella vaccine: results from a nested case-control study. Pediatr Infect Dis J. 2010 Mar; 29(3):205-8. PMID: 19952977.
      View in: PubMed
    73. Chao C, Velicer C, Slezak JM, Jacobsen SJ. Correlates for human papillomavirus vaccination of adolescent girls and young women in a managed care organization. Am J Epidemiol. 2010 Feb 01; 171(3):357-67. PMID: 20047978.
      View in: PubMed
    74. Chao C, Haque R, Caan BJ, Poon KY, Tseng HF, Quinn VP. Red wine consumption not associated with reduced risk of colorectal cancer. Nutr Cancer. 2010; 62(6):849-55. PMID: 20661834.
      View in: PubMed
    75. Chao C, Haque R, Van Den Eeden SK, Caan BJ, Poon KY, Quinn VP. Red wine consumption and risk of prostate cancer: the California men's health study. Int J Cancer. 2010 Jan 01; 126(1):171-9. PMID: 19521962.
      View in: PubMed
    76. Silverberg MJ, Chao C, Abrams DI. New insights into the role of HIV infection on cancer risk. Lancet Oncol. 2009 Dec; 10(12):1133-4. PMID: 19959070.
      View in: PubMed
    77. Silverberg MJ, Chao C, Leyden WA, Xu L, Tang B, Horberg MA, Klein D, Quesenberry CP, Towner WJ, Abrams DI. HIV infection and the risk of cancers with and without a known infectious cause. AIDS. 2009 Nov 13; 23(17):2337-45. PMID: 19741479.
      View in: PubMed
    78. Chao C, Velicer C, Slezak JM, Jacobsen SJ. Correlates for completion of 3-dose regimen of HPV vaccine in female members of a managed care organization. Mayo Clin Proc. 2009 Oct; 84(10):864-70. PMID: 19797775.
      View in: PubMed
    79. Chao C, Slezak JM, Coleman KJ, Jacobsen SJ. Papanicolaou screening behavior in mothers and human papillomavirus vaccine uptake in adolescent girls. Am J Public Health. 2009 Jun; 99(6):1137-42. PMID: 19372507.
      View in: PubMed
    80. Chao C, Jacobson LP, Jenkins FJ, Tashkin D, Martínez-Maza O, Roth MD, Ng L, Margolick JB, Chmiel JS, Zhang ZF, Detels R. Recreational drug use and risk of Kaposi's sarcoma in HIV- and HHV-8-coinfected homosexual men. AIDS Res Hum Retroviruses. 2009 Feb; 25(2):149-56. PMID: 19108691.
      View in: PubMed
    81. Chao C, Jacobson LP, Tashkin D, Martínez-Maza O, Roth MD, Margolick JB, Chmiel JS, Holloway MN, Zhang ZF, Detels R. Recreational amphetamine use and risk of HIV-related non-Hodgkin lymphoma. Cancer Causes Control. 2009 Jul; 20(5):509-16. PMID: 19011979.
      View in: PubMed
    82. Chao C, Slezak JM, Caan BJ, Quinn VP. Alcoholic beverage intake and risk of lung cancer: the California Men's Health Study. Cancer Epidemiol Biomarkers Prev. 2008 Oct; 17(10):2692-9. PMID: 18843011.
      View in: PubMed
    83. Chao C, Page JH. Type 2 diabetes mellitus and risk of non-Hodgkin lymphoma: a systematic review and meta-analysis. Am J Epidemiol. 2008 Sep 01; 168(5):471-80. PMID: 18611954.
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    84. Chao C, Jacobson LP, Tashkin D, Martínez-Maza O, Roth MD, Margolick JB, Chmiel JS, Rinaldo C, Zhang ZF, Detels R. Recreational drug use and T lymphocyte subpopulations in HIV-uninfected and HIV-infected men. Drug Alcohol Depend. 2008 Apr 01; 94(1-3):165-71. PMID: 18180115.
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    85. Gottlieb AB, Chao C, Dann F. Psoriasis comorbidities. J Dermatolog Treat. 2008; 19(1):5-21. PMID: 18273720.
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    86. Chao C. Associations between beer, wine, and liquor consumption and lung cancer risk: a meta-analysis. Cancer Epidemiol Biomarkers Prev. 2007 Nov; 16(11):2436-47. PMID: 18006934.
      View in: PubMed
    87. Morgan BL, Chao CR. The effects of hypoxia on growth cones in the ovine fetal brain. J Matern Fetal Neonatal Med. 2004 Jul; 16(1):55-9. PMID: 15370084.
      View in: PubMed
    88. Morgan BL, Chao CR, Iyer V, Ross MG. Correlation between fetal scalp blood samples and intravascular blood pH, pO2 and oxygen saturation measurements. J Matern Fetal Neonatal Med. 2002 May; 11(5):325-8. PMID: 12389674.
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    89. El-Haddad MA, Chao CR, Sayed AA, El-Haddad H, Ross MG. Effects of central angiotensin II receptor antagonism on fetal swallowing and cardiovascular activity. Am J Obstet Gynecol. 2001 Oct; 185(4):828-33. PMID: 11641660.
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    90. El-Haddad MA, Chao CR, Ma Sx, Ross MG. Nitric oxide modulates angiotensin II-induced drinking behavior in the near-term ovine fetus. Am J Obstet Gynecol. 2000 Mar; 182(3):713-9. PMID: 10739535.
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    91. Ma S, Li X, Fang Q, Ross MG, Chao CR. Influence of fetal to neonatal transition on nitric oxide synthase expression in the nucleus tractus solitarius in sheep. Brain Res Dev Brain Res. 1999 Dec 10; 118(1-2):119-27. PMID: 10611510.
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    92. El-Haddad MA, Chao CR, Ma SX, Ross MG. Nitric oxide modulates spontaneous swallowing behavior in near-term ovine fetus. Am J Physiol. 1999 10; 277(4):R981-6. PMID: 10516235.
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    93. Nijland MJ, Chao CR, Ross MG. Anticholinergic suppression of ovine fetal swallowing activity. Am J Obstet Gynecol. 1997 Nov; 177(5):1105-12. PMID: 9396903.
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    94. Nakahara K, Iso A, Chao CR, Cooper TB, Morishima HO. Pregnancy enhances cocaine-induced stimulation of uterine contractions in the chronically instrumented rat. Am J Obstet Gynecol. 1996 Jul; 175(1):188-93. PMID: 8694050.
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    95. Chao CR. Cardiovascular effects of cocaine during pregnancy. Semin Perinatol. 1996 Apr; 20(2):107-14. PMID: 8857696.
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    96. Timor-Tritsch IE, Boozarjomehri F, Masakowski Y, Monteagudo A, Chao CR. Can a "snapshot" sagittal view of the cervix by transvaginal ultrasonography predict active preterm labor? Am J Obstet Gynecol. 1996 Mar; 174(3):990-5. PMID: 8633681.
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    97. Boozarjomehri F, Timor-Tritsch I, Chao CR, Fox HE. Transvaginal ultrasonographic evaluation of the cervix before labor: presence of cervical wedging is associated with shorter duration of induced labor. Am J Obstet Gynecol. 1994 Oct; 171(4):1081-7. PMID: 7943075.
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    98. Badalian SS, Fox HE, Chao CR, Timor-Tritsch IE, Stolar CJ. Fetal breathing characteristics and postnatal outcome in cases of congenital diaphragmatic hernia. Am J Obstet Gynecol. 1994 Oct; 171(4):970-6. PMID: 7943111.
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    99. Badalian SS, Chao CR, Fox HE, Timor-Tritsch IE. Fetal breathing-related nasal fluid flow velocity in uncomplicated pregnancies. Am J Obstet Gynecol. 1993 Sep; 169(3):563-7. PMID: 8372863.
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    100. Chao CR, Hohimer AR, Bissonnette JM. The effect of elevated blood glucose on the electroencephalogram and cerebral metabolism during short-term brain ischemia in fetal sheep. Am J Obstet Gynecol. 1989 Jul; 161(1):221-8. PMID: 2750808.
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