[1] Peking Univ Third Hosp, Natl Clin Res Ctr Obstetr & Gynecol Dis, Dept Obstet & Gynecol, Minist Educ,Key Lab Assisted Reprod,Ctr Reprod Me, Beijing 100191, Peoples R China
[2] Sichuan Univ, Natl Ctr Birth Defect Surveillance China, Natl Off Maternal & Child Hlth Surveillance China, Dept Pediat,West China Univ Hosp 2, Chengdu 610041, Peoples R China
[3] Shanghai Jiao Tong Univ, Sch Med, Child Hlth Advocacy Inst, Natl Childrens Med Ctr,Shanghai Childrens Med Ctr, Shanghai, Peoples R China
[4] Shanghai Jiao Tong Univ, Sch Med, Shanghai Key Lab Childrens Environm Hlth, Xinhua Hosp,Minist Educ, Shanghai, Peoples R China
[5] Peking Univ, Sch Publ Hlth, Inst Child & Adolescent Hlth, Key Lab Reprod Hlth, Beijing, Peoples R China
[6] Peking Univ, Sch Publ Hlth, Dept Global Hlth, Beijing, Peoples R China
[7] Harvard Univ, Dept Populat Med, China Program Hlth Innovat & Transformat, Boston, MA 02115 USA
[8] Natl Hlth & Dev Res Ctr, Beijing, Peoples R China
[9] China Maternal & Child Hlth Assoc, Beijing, Peoples R China
[10] Fudan Univ, Sch Publ Hlth, Shanghai, Peoples R China
[11] Fudan Univ, Global Hlth Inst, Shanghai, Peoples R China
[12] Fudan Univ, Key Lab Metab & Mol Med, Minist Educ, Dept Biochem & Mol Biol, Shanghai, Peoples R China
[13] Chinese Ctr Dis Control & Prevent, Natl Ctr Chron & Noncommunicable Dis Control & Pr, Beijing, Peoples R China
[14] Chinese Ctr Dis Control & Prevent, Natl Ctr Women & Childrens Hlth, Beijing, Peoples R China
[15] Gansu Prov Matern & Child Care Hosp, Lanzhou, Peoples R China
[16] Johns Hopkins Univ, Dept Populat Family & Reprod Hlth, Dept Int Hlth, Bloomberg Sch Publ Hlth, Baltimore, MD USA
[17] Univ Washington, Inst Hlth Metr & Evaluat, Seattle, WA 98195 USA
[18] Univ Adelaide, Robinson Res Inst, Fertility SA, Adelaide, SA, Australia
[19] London Sch Hyg & Trop Med, Ctr Maternal Adolescent Reprod & Child Hlth, London, England
[20] London Sch Hyg & Trop Med, Dept Infect Dis Epidemiol, London, England
[21] Univ Melbourne, Ctr Adolescent Hlth, Murdoch Childrens Res Inst, Melbourne, Vic, Australia
[22] Natl Hlth Commiss Peoples Republ China, Dept Women & Children Hlth, Beijing 100044, Peoples R China
[23] Zhejiang Univ, Ctr Global Hlth, Sch Med, Hangzhou, Peoples R China
[24] UCL, Inst Global Hlth, London, England