1. National Centre for Epidemiology and Public Health, Australian National University, Canberra, ACT 2600, Australia
2. Dispensary, Vila Central Hospital, Ministry of Health, Private Mail Bag, Port Vila 9009, Vanuatu
3. Curative Services, Ministry of Health, Private Mail Bag, Port Vila 9009, Vanuatu
4. Pacific Region Infectious Diseases Association, Kenmore Hills, QLD 4069, Australia
5. Rocketship Pacific, Estella, NSW 2650, Australia
6. School of Public Health, Faculty of Medicine, The University of Queensland, Herston, QLD 4006, Australia