[1] Publ Hlth England, Hlth & Wellbeing, London, England
[2] Leeds City Council, Leeds, W Yorkshire, England
[3] NHS Leeds North Clin Commissioning Grp, Leeds, W Yorkshire, England
[4] Elton John AIDS Fdn, London, England
[5] Homerton Univ Hosp Trust, Ctr Study Sexual Hlth & HIV, London, England