1. Department of Clinical Nutrition, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
2. Department of Endocrinology and Metabolism, Chongqing General Hospital, Chongqing, China
3. Department of Obstetrics and Gynecology, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
4. Department of Evidence-based Medicine and Clinical Epidemiology, West China Medical School of Medicine/West China Hospital, Sichuan University, Chengdu, China