1 Central Clinical School, Monash University, Melbourne, VIC, Australia; Melbourne Sexual Health Centre, Alfred Hospital, Melbourne, VIC, Australia.
2 Population Health Sciences, and National Institute for Health Research Health Protection Research Unit in Evaluation of Interventions, University of Bristol, Bristol, UK; Unity Sexual Health, University Hospitals Bristol NHS Trust, Bristol, UK.
3 Research Unit for Reproductive Microbiology, Statens Serum Institut, Copenhagen, Denmark.
4 MRC Centre for Outbreak Analysis and Modelling and National Institute for Health Research Health Protection Research Unit in Modelling Methodology, Department of Infectious Disease Epidemiology, Imperial College London, London W2 1PG, UK; Modelling and Economics Unit, National Infection Service, Public Health England, London, UK. Electronic address: [email protected].