University of Antwerp - Centre for Population, Family, and Health, University of North Carolina Project-China, University of Fribourg - Department of Psychology, University of the Witwatersrand - Department of Family Medicine, University of Minnesota - Minneapolis - Institute for Sexual and Gender Health, University of Glasgow - MRC/CSO Social and Public Health Sciences Unit, Sapienza University of Rome - Faculty of Medicine and Psychology, London School of Hygiene & Tropical Medicine - Faculty of Infectious and Tropical Diseases, Foundation for Professional Development - Health Systems Strengthening Division, Charles University - Department of Psychology and Life Sciences, Mbarara University of Science and Technology, University of Ibadan - Institute of Child Health, University of North Carolina (UNC) at Chapel Hill - Institute of Global Health and Infectious Diseases, Doctor Peset University Hospital - Center for Sexual and Reproductive Health, Karolinska Institutet - Department of Women’s and Children’s Health, Karolinska Institutet - Department of Women’s and Children’s Health, Universidad de Oviedo - Department of Education Sciences, University of Buenos Aires (UBA) - Faculty of Psychology, University of Buenos Aires (UBA) - Faculty of Psychology, University of Buenos Aires (UBA) - Faculty of Psychology, University of Hamburg - Institute for Sex Research, University of Ibadan - Faculty of Public Health, Curtin University - Collaboration for Evidence, Curtin University - Collaboration for Evidence, London School of Hygiene & Tropical Medicine - Department of Clinical Research, London School of Hygiene & Tropical Medicine - Department of Clinical Research, AMREF Health Africa - Centre of Excellence to end Female Genital Mutilation/Cutting, University of Hamburg - Institute for Sex Research, University of North Carolina (UNC) at Chapel Hill - Institute of Global Health and Infectious Diseases, Botswana Harvard AIDS Institute Partnership (BHP) - Botswana Sexual and Reproductive Health Initiative, University of Malaya (UM) - Department of Social and Preventive Medicine, Universite du Luxembourg - Institute for Health and Behaviour, University of Antwerp - Centre for Population, Family, and Health, Southern Medical University and affiliation not provided to SSRN

Nanjing Medical University, London School of Hygiene & Tropical Medicine - Faculty of Infectious and Tropical Diseases, London School of Hygiene & Tropical Medicine, Johns Hopkins University, London School of Hygiene & Tropical Medicine, Nanjing Medical University, Nanjing Medical University, Centre for Initiative and Development (CFID), University of Oxford - Peter Medawar Building for Pathogen Research, University of Washington, Southern Medical University and London School of Hygiene & Tropical Medicine - Department of Clinical Research

Sichuan University - West China School of Public Health, Nanjing Medical University, Sichuan University, Yulin Community Health Service Center, Yale University, National University of Singapore (NUS) - Duke-NUS Medical School, Alfred Health - Melbourne Sexual Health Centre, Sichuan University, Sichuan University, Peking University - Institute of Population Research, Gates Foundation - Beijing Representative Office, Gates Foundation - Beijing Representative Office, University of North Carolina (UNC) at Chapel Hill, London School of Hygiene & Tropical Medicine - Department of Infectious Disease Epidemiology, New York University (NYU), London School of Hygiene & Tropical Medicine - Department of Infectious Disease Epidemiology, University of North Carolina (UNC) at Chapel Hill, Washington University in St. Louis, Southern Medical University - Acacia Labs of SMU Institute for Global Health (SIGHT), Southern Medical University - Dermatology Hospital, Duke University - Duke Global Health Institute, Southern Medical University and London School of Hygiene & Tropical Medicine - Department of Clinical Research

London School of Hygiene & Tropical Medicine - Department of Clinical Research, University of North Carolina Project-China, London School of Hygiene & Tropical Medicine - Department of Clinical Research, The University of Hong Kong, Alfred Health - Melbourne Sexual Health Centre, University of Sheffield, Duke University, New York University (NYU), London School of Hygiene & Tropical Medicine - Department of Infectious Disease Epidemiology, London School of Hygiene & Tropical Medicine - Faculty of Public Health and Policy, London School of Hygiene & Tropical Medicine - Department of Infectious Disease Epidemiology, Gates Foundation - Beijing Representative Office, Peking University - Institute of Population Research, University of North Carolina (UNC) at Chapel Hill - Project-China, University of North Carolina Project-China, Jinan University, Zhuhai Center for Disease Control and Prevention, Guangdong Second Provincial General Hospital, Yangshan Health Centre - Vaccination Clinic, Fenghuang Community Health Service Centre, Xinhua Community Health Service Centre, Community Representative, Guangzhou, China, Guangdong Second Provincial General Hospital, Southern Medical University - Dermatology Hospital and Southern Medical University

University of North Carolina Project-China, Duke University, Dermatology Hospital of Southern Medical University, London School of Hygiene & Tropical Medicine - Department of Clinical Research, Alfred Health - Melbourne Sexual Health Centre, World Health Organization (WHO) - Global HIV, Hepatitis and STI Programme, Southern Medical University - Dermatology Hospital of Southern Medical University, Southern Medical University and Dermatology Hospital of Southern Medical University

City University of Hong Kong (CityU) - Department of Social and Behavioural Sciences, City University of Hong Kong (CityU) - Department of Social and Behavioural Sciences, Guangzhou Center for Disease Control and Prevention, London School of Hygiene & Tropical Medicine - Department of Clinical Research, University of Michigan at Ann Arbor - Department of Health Behavior & Health Education and City University of Hong Kong (CityU) - Department of Social and Behavioural Sciences

Nanjing Medical University, affiliation not provided to SSRN, affiliation not provided to SSRN, Nanjing Medical University, Alfred Health - Melbourne Sexual Health Centre and London School of Hygiene & Tropical Medicine - Department of Clinical Research