1. Department of Obstetrics and Gynecology, The Third Affiliated Hospital of Chongqing Medical University, Chongqing, China
2. Department of Rehabilitation Medicine, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
3. Department of Clinical Laboratory Medicine, Southwest Hospital, Army Medical University (Third Military Medical University), Chongqing, China
4. Department of Obstetrics and Gynecology, Institute of Surgery Research, Daping Hospital, Army Medical University (Third Military Medical University), Chongqing, China