1. Melbourne Sexual Health Centre, Alfred Health , Melbourne, Victoria, Australia
2. Faculty of Medicine, Nursing and Health Sciences, Central Clinical School, Monash University , Melbourne, Victoria, Australia
3. Department of Infectious Diseases, The University of Melbourne, The Peter Doherty Institute for Infection and Immunity , Melbourne, Victoria, Australia
4. Victorian Infectious Diseases Reference Laboratory , Melbourne, Victoria, Australia
5. Centre for Epidemiology and Biostatistics, Melbourne School of Population and Global Health, The University of Melbourne , Melbourne, Victoria, Australia