[1] Univ North Carolina Project China, Guangzhou, Guangdong, Peoples R China
[2] Natl Univ Singapore, Saw Swee Hock Sch Publ Hlth, Singapore, Singapore
[3] Natl Univ Hlth Syst, Singapore, Singapore
[4] Univ Tokyo, Tokyo Coll, Tokyo, Japan
[5] Univ N Carolina, Gillings Sch Global Publ Hlth, Chapel Hill, NC USA
[6] Cincinnati Childrens Hosp Med Ctr, Cincinnati, OH USA
[7] Southern Med Univ, Dermatol Hosp, Guangzhou, Guangdong, Peoples R China
[8] Univ N Carolina, Dept Med, Chapel Hill, NC USA
[9] London Sch Hyg & Trop Med, Clin Res Dept, London, England