1. United States Centers for Disease Control and Prevention (CDC) Global AIDS Program, Beijing, People’s Republic of China
2. National Centre for AIDS/STD Prevention and Control, Chinese Centre for Disease Control and Prevention, Beijing, People’s Republic of China
3. Department of HIV/AIDS, Guangdong Provincial Centre for Disease Control and Prevention, Guangzhou, People’s Republic of China
4. Department of HIV/AIDS/STD, Guizhou Provincial Centre for Disease Control and Prevention, Guiyang, People’s Republic of China
5. Department of HIV/AIDS, Shandong Provincial Centre for Disease Control and Prevention, Jinan, People’s Republic of China