| Affiliation: | 1. School of Public Health, Fudan University, Shanghai, China;2. Fetal Medicine Unit, Division of Maternal-Fetal Medicine, Department of Obstetrics, Shanghai First Maternity and Infant Hospital, Shanghai, China;3. OMNI Research Group, Clinical Epidemiology Program, Ottawa Health Research Institute, Ottawa ON;4. Department of Epidemiology and Community Medicine, Faculty of Medicine, University of Ottawa, Ottawa ON;5. Placenta Clinic, Maternal-Fetal Medicine Division, Department of Obstetrics and Gynecology, Mount Sinai Hospital, University of Toronto, Toronto ON;6. Department of Epidemiology, Biostatistics and Occupational Health and Department of Pediatrics, McGill University Faculty of Medicine, Montreal QC;7. Division of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, Faculty of Medicine, Ottawa General Hospital, University of Ottawa, Ottawa ON;8. Shanghai Institute of Planned Parenthood Research/WHO Collaborating Center on Human Research, Shanghai, China |
