Coplan, P. M.Gortmaker, S.Hemandez-Avila, M.Spiegelman, D.Uribe-Zuuiga, P.Mueller, N. E.2019-09-211996Coplan, P. M., S. Gortmaker, M. Hemandez-Avila, D. Spiegelman, P. Uribe-Zuuiga, and N. E. Mueller. 1996. “Human Immunodeficiency Virus Infection in Mexico City: Rectal Bleeding and Anal Warts as Risk Factors among Men Reporting Sex with Men.” American Journal of Epidemiology 144 (9): 817–27. https://doi.org/10.1093/oxfordjournals.aje.a009016.0002-92621476-6256http://nrs.harvard.edu/urn-3:HUL.InstRepos:41384756en-USHuman Immunodeficiency Virus Infection in Mexico City: Rectal Bleeding and Anal Warts as Risk Factors among Men Reporting Sex with MenJournal Article2019-09-2110.1093/oxfordjournals.aje.a009016