1. Department of Virology, Centre for Infectious Diseases and MicrobiologyInstitute of Clinical Pathology and Medical Research, Westmead HospitalWestmeadNSW2145
2. Sexually Transmissible Diseases ClinicRoyal North Shore HospitalSt LeonardsNSW2065
3. Emory University School of MedicineAtlantaGeorgiaUSA
4. Sexual Health ClinicParramatta Hospital158 Marsden StreetParramattaNSW2150
5. Sydney Sexually Transmissible Diseases CentreSydney HospitalSydneyNSW2000
6. Department of Clinical VirologyUniversity of GöteborgSweden