[1] Sichuan Univ, West China Sch Publ Hlth, Inst Syst Epidemiol, Chengdu, Sichuan, Peoples R China
[2] Sichuan Univ, West China Hosp 4, Chengdu, Sichuan, Peoples R China
[3] Sichuan Univ, West China Univ Hosp 2, Evidence Based Pharm Ctr, Dept Pharm,Key Lab Birth Defects & Related Dis Wom, Chengdu, Peoples R China
[4] Kings Coll London, Inst Psychiat Psychol & Neurosci, Dept Child & Adolescent Psychiat, London, England