[1] Melbourne Sexual Hlth Ctr, Melbourne, Vic, Australia
[2] Univ Melbourne, Melbourne Sch Populat & Global Hlth, Melbourne, Vic, Australia
[3] Univ Queensland, St Lucia, Qld, Australia
[4] Univ Queensland, Queensland Childrens Med Res Inst, Queensland Paediat Infect Dis Lab, St Lucia, Qld, Australia
[5] Monash Univ, Cent Clin Sch, Melbourne, Vic 3004, Australia
[6] Prince Wales Hosp, WHO Collaborating Ctr Sexually Transmitted Dis, SEALS Microbiol, Randwick, NSW 2031, Australia
[7] Univ New S Wales, Kensington, NSW 2033, Australia