1. Department of Obstetrics, Gynecology and Reproductive Sciences, Yale University School of Medicine, New Haven, CT, USA
2. Deparment of Obstetrics and Gynecology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, P.R. China
3. Department of Chronic Diseases Epidemiology, Yale School of Public Health, Yale University School of Medicine, New Haven, CT, USA
4. Department of Head and Neck Surgery, State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, P.R. China
5. Department of Endocrinology, School of Medicine, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, P.R. China
6. Department of Obstetrics and Gynecology, The Ohio State University College of Medicine, Columbus, OH, USA
7. Center for Perinatal Research, The Research Institute at Nationwide Children's Hospital, Columbus, OH, USA
8. Department of Pediatrics, The Ohio State University College of Medicine, Columbus, OH, USA
9. Yale Women and Children's Center for Blood Disorders and Preeclampsia Advancement, Yale School of Medicine, New Haven, CT, USA