[1] WHO, Dept Sexual & Reprod Hlth & Res, Geneva, Switzerland
[2] Univ Ghent, Fac Med & Hlth Sci, Ghent, Belgium
[3] Murtagh Grp LCC, Woodside, CA USA
[4] Orebro Univ, Fac Med & Hlth, WHO Collaborating Ctr Gonorrhoea & Other STIs, Natl Reference Lab STIs,Dept Lab Med,Microbiol, Orebro, Sweden
[5] Qatar Univ, Coll Dent Med, Doha, Qatar
[6] London Sch Hyg & Trop Med, Int Diagnost Ctr, London, England