[1] St Vincents Inst, NRL, Melbourne, Vic, Australia
[2] Univ Indonesia, Dept Clin Pathol, Fac Med, Dr Cipto Mangunkusumo Hosp, Jakarta, Indonesia
[3] W Java Hlth Off, W Java Prov Hlth Lab, Bandung, Indonesia
[4] Univ Melbourne, Dept Microbiol & Immunol, Parkville, Vic 3052, Australia