1. Monash University School of Public Health and Preventive Medicine, , Melbourne 3004, Australia
2. Monash University Department of Infectious Diseases, The Alfred Hospital and Central Clinical School, , Melbourne 3004, Australia
3. University of New South Wales School of Population Health, Faculty of Medicine and Health, , Sydney 2052, Australia
4. Monash University Monash Infectious Diseases Service, Monash Health and School of Clinical Sciences, , Melbourne 3168, Australia
5. Royal Melbourne Hospital at the Peter Doherty Institute for Infection and Immunity Victorian Infectious Diseases Service, , Melbourne 3000, Australia