1. Williams H Varney J Taylor J Fish J Durr P Elan-Cain C https://www.london.gov.uk/sites/default/files/LGBT%20Public%20Health%20Outcomes%20Framework%20Companion%20Doc.pdf
2. Centers for Disease Control and Prevention Lesbian, Gay, Bisexual and Transgender Health http://www.cdc.gov/lgbthealth/about.htm
3. Joint United Nations Programme on HIV/AIDS. Agenda for zero discrimination in healthcare http://www.unaids.org/en/resources/documents/2016/Agenda-zero-discrimination-healthcare
4. Joint United Nations Programme on HIV/AIDS. The gap report 2014 http://www.unaids.org/en/media/unaids/contentassets/documents/unaidspublication/2014/UNAIDS_Gap_report_en.pdf