[1] Neisseria Reference Lab, Sydney, NSW, Australia
[2] WHO, Collaborating Ctr STD, Sydney, NSW, Australia
[3] Prince Wales Hosp, Dept Microbiol, South Eastern Area Lab Serv, Randwick, NSW, Australia
[4] Univ New South Wales, Sch Med Sci, Fac Med, Natl Neisseria Network, Kensington, NSW, Australia