[1] Menzies Sch Hlth Res, Global & Trop Hlth, Royal Darwin Hosp Campus,POB 41096, Darwin, NT 0811, Australia
[2] Charles Darwin Univ, Sch Psychol & Clin Sci, Darwin, NT, Australia
[3] Sexual Assault Referral Ctr Darwin, Casuarina, NT, Australia
[4] Menzies Sch Hlth Res, Child Hlth Div, Casuarina, NT, Australia
[5] Flinders Univ S Australia, Northern Terr Med Program, Darwin, NT, Australia
[6] Royal Womens Hosp, Dept Microbiol & Infect Dis, Parkville, Vic, Australia
[7] Univ Melbourne, Dept Obstet & Gynaecol, Melbourne, Vic, Australia
[8] Royal Childrens Hosp, Dept Microbiol, Melbourne, Vic, Australia
[9] Murdoch Childrens Res Inst, Melbourne, Vic, Australia