1 School of Public Health and Community Medicine, the University of New South Wales, Australia; Melbourne Sexual Health Centre, Alfred Health, Australia; Centre for Population Health, Burnet Institute, Australia. Email: [email protected].
2 Chinese Academy of Medical Sciences/Peking Union Medical College, Peking Union Medical College Hospital, China.
3 Melbourne Sexual Health Centre, Alfred Health, Australia; Central Clinical School, Faculty of Medicine, Nursing and Health Sciences, Monash University, Australia.
4 Surveillance and Evaluation Program for Public Health, The Kirby Institute, the University of New South Wales, Australia.