1. Estimating the population size of men who have sex with men in the United States to obtain HIV and syphilis rates.;Purcell;Open AIDS J,2012
2. CDC. Diagnoses of HIV in the United States and dependent areas, 2011. HIV Surveillance Report. Atlanta, GA: US Department of Health and Human Services, CDC; 2011. http://www.cdc.gov/hiv/pdf/statistics_2011_HIV_Surveillance_Report_vol_23.pdf.
3. Trends in diagnoses of HIV infection in the United States, 2002–2011.;Johnson;JAMA,2014
4. CDC. Estimated HIV incidence in the United States, 2007–2010. In: HIV Surveillance Report Supplemental Report. Atlanta, GA: US Department of Health and Human Services, CDC; 2012. http://www.cdc.gov/hiv/pdf/statistics_hssr_vol_17_no_4.pdf.
5. CDC. Leading causes of death by age group, all males–United States, 2011. Atlanta, GA: US Department of Health and Human Services, CDC. http://www.cdc.gov/men/lcod/2011/lcod_menallages2011.pdf.