[1] Orebro Univ, Fac Med & Hlth, WHO Collaborating Ctr Gonorrhoea & Other STIs, Natl Reference Lab STI,Dept Lab Med, Orebro, Sweden
[2] Karolinska Univ Hosp, Dept Clin Microbiol, Huddinge, Sweden
[3] Karolinska Univ Hosp, Dept Venerol, Stockholm, Sweden
[4] Natl Inst Infect Dis, Dept Bacteriol 1, Tokyo, Japan
[5] Univ Coll London UCL, Inst Global Hlth, London, England