1. National Centre in HIV Epidemiology and Clinical ResearchUniversity of New South WalesSydneyNSW
2. National Centre for Epidemiology and Population HealthAustralian National UniversityACT
3. Epidemiology and Social Research UnitMacfarlane Burnet Centre for Medical Research, Fairfield HospitalFairfieldVIC
4. Surveillance and Epidemiology Section, Public Health DivisionCommonwealth Department of Health and Family ServicesCanberraACT
5. Communicable Diseases Control UnitHealth Department of Western AustraliaPerthWA