[1] University College London (UCL),Centre for Population Research in Sexual Health and HIV, Institute for Global Health
[2] Mortimer Market Centre,School of Health Sciences
[3] HIV & STI Department,Instituto de Medicina Tropical
[4] Centre for Infectious Disease Surveillance and Control,undefined
[5] Public Health England (PHE),undefined
[6] National Institute for Health Research Health Protection Research Unit (NIHR HPRU) in Blood Borne and Sexually Transmitted Infections at UCL,undefined
[7] in partnership with PHE,undefined
[8] and in collaboration with the London School of Hygiene & Tropical Medicine,undefined
[9] University of Brighton,undefined
[10] Universidade de São Paulo,undefined