1. Shanghai Key Laboratory of Maternal Fetal Medicine, Shanghai Institute of Maternal-Fetal Medicine and Gynecologic Oncology, Shanghai First Maternity and Infant Hospital, School of Medicine, Tongji University, No. 2699, Gaoke West Road, Shanghai 200092, China
2. Division of Minimally Invasive Gynecology, Department of Obstetrics and Gynecology, Baylor College of Medicine, 6651 Main St., 10th Floor, Houston, TX 77030, USA