Shanghai Jiao Tong University (SJTU) - Department of Obstetrics and Gynecology, Shanghai Jiao Tong University (SJTU) - Department of Obstetrics and Gynecology, Tongji University - Shanghai First Maternity and Infant Hospital, Shanghai General Hospital Jiading Branch - Department of Obstetrics and Gynecology, University of Ottawa - School of Epidemiology and Public Health and Shanghai Jiao Tong University (SJTU) - Obstetrics Department

University of Ottawa - Ottawa Hospital Research Institute, University of Ottawa - Ottawa Hospital Research Institute, University of Ottawa - Ottawa Hospital Research Institute, University of Ottawa - Ottawa Hospital Research Institute, Children's Hospital of Eastern Ontario Research Institute (CHEO), Children's Hospital of Eastern Ontario Research Institute (CHEO), International Centre for Diarrheal Disease Research, Children's Hospital of Eastern Ontario Research Institute (CHEO), Global Alliance to Prevent Prematurity and Stillbirth, Global Alliance to Prevent Prematurity and Stillbirth, University of Ottawa, University of Ottawa - Ottawa Hospital Research Institute, University of Ottawa - School of Epidemiology and Public Health, International Center for Diarrhoeal Disease Research, Bangladesh (ICDDR,B) - Maternal and Child Health Division, Global Alliance to Prevent Prematurity and Stillbirth and University of Ottawa - Ottawa Hospital Research Institute