1. Jiangsu Provincial Center for Disease Control and Prevention, Nanjing, People’s Republic of China
2. Division of Behavioral Health and Health Promotion, JC School of Public Health and Primary Care, The Chinese University of Hong Kong, Hong Kong, People’s Republic of China
3. Chengdu Community Gay Care Organization, Chengdu, People’s Republic of China
4. Hebei Light of Love Group Caring for People Living with HIV, Baoding, People’s Republic of China
5. Department of Social and Behavioral Sciences, Harvard T.H. Chan School of Public Health, Harvard University, Boston, MA, US
6. Shenzhen Research Institute, The Chinese University of Hong Kong, Shenzhen, People’s Republic of China
7. School of Public Health, Zhejiang University School of Medicine, Hangzhou, People’s Republic of China