[1] Alfred Hlth, Melbourne Sexual Hlth Ctr, Melbourne, Vic, Australia
[2] Monash Univ, Cent Clin Sch, Melbourne, Vic, Australia
[3] Univ Melbourne, Melbourne Sch Populat & Global Hlth, Melbourne, Vic, Australia
[4] Univ Melbourne, Dept Microbiol & Immunol, Peter Doherty Inst Infect & Immun, Microbiol Diagnost Unit,Publ Hlth Lab, Melbourne, Vic, Australia