[1] Univ New S Wales, Natl Ctr HIV Epidemiol & Clin Res, Darlinghurst, NSW 2010, Australia
[2] Univ New S Wales, Natl Ctr HIV Social Res, Darlinghurst, NSW 2010, Australia
[3] La Trobe Univ, Australian Res Ctr Sex Hlth & Soc, Melbourne, Vic, Australia