[1] Univ Calif San Diego, La Jolla, CA 92093 USA
[2] Univ North Carolina Project China, Guangzhou, Peoples R China
[3] UNSW, Kirby Inst, Sydney, NSW, Australia
[4] Xian Jiaotong Liverpool Univ, Suzhou, Peoples R China
[5] Shenzhen Univ, Shenzhen, Peoples R China
[6] London Sch Hyg & Trop Med, London, England
[7] Eastern Virginia Med Sch, Norfolk, VA 23501 USA
[8] Guangzhou CDC, Guangzhou, Peoples R China
[9] Rutgers State Univ, New Brunswick, NJ USA
[10] Southern Med Univ, Dermatol Hosp, 2 Lujing Rd, Guangzhou 510095, Peoples R China
[11] Univ North Carolina Project China, 2 Lujing Rd, Guangzhou 510095, Peoples R China
[12] Univ N Carolina, Chapel Hill, NC 27515 USA
[13] Southern Med Univ, Inst Global Hlth & STI Res, Guangzhou, Peoples R China