[1] Chinese Ctr Dis Control & Prevent, State Key Lab Infect Dis Prevent & Control, Collaborat Innovat Ctr Diag & Treatment Infect Di, Natl Ctr AIDS STD Control & Prevent,Div Treatment, Beijing, Peoples R China
[2] Sichuan Ctr Dis Control & Prevent, Chengdu, Peoples R China
[3] Capital Med Univ, Beijing Ditan Hosp, Clin & Res Ctr Infect Dis, 8 Jingshun Dongjie, Beijing 100015, Peoples R China
[4] Capital Med Univ, Clin Ctr AIDS, Beijing, Peoples R China