1. HIV Epidemiology Program–Los Angeles County Department of Health Services (2002) Special data run. Los Angeles. Los Angeles County Department of Public Health.
2. HIV Epidemiology Program–Los Angeles County Department of Public Health (2008) Special data run. Los Angeles. Los Angeles County Department of Public Health.
3. HIV Epidemiology Program–Los Angeles County Department of Public Health (2011) 2011 Annual HIV Surveillance Report. Los Angeles County Department of Public Health.
4. Centers for Disease Control and Prevention (2012) HIV among Gay and Bisexual Men. Department of Health and Human Services.
5. Finding sex partners on the internet: what is the risk for sexually transmitted infections?;AA Al-Tayyib;Sexually Transmitted Infections,2009