[1] Kings Coll Hosp London, Sexual Hlth & HIV, London, England
[2] UCL, Infect Dis & HIV, London, England
[3] Chelsea & Westminster Hosp NHS Fdn Trust, HIV & Sexual Hlth, London, England
[4] UCL, Infect Dis Modelling & Biostat, London, England
[5] NHS Lothian, HIV & Sexual Hlth, Edinburgh, Midlothian, Scotland
[6] Publ Hlth England, London, England
[7] UCL, London, England
[8] Terrence Higgins Trust, London, England
[9] NAZ, London, England
[10] UCL, MRC Clin Trials Unit, Clin Epidemiol, London, England
[11] Univ Hosp Leicester NHS Trust, HIV & Sexual Hlth, Leicester, Leics, England
[12] Mortimer Market Ctr, HIV & Sexual Hlth, London, England
[13] Kings Coll Hosp London, HIV & Sexual Hlth Med, London, England
[14] North Manchester Gen Hosp, Infect Dis, Manchester, Lancs, England
[15] Univ Edinburgh, Usher Inst, Edinburgh, Midlothian, Scotland