1. Reproductive Medicine Center Tongji Medical College, Tongji Hospital, Huazhong University of Science and Technology Wuhan China
2. Emergency Department The First People's Hospital of Jiande, The Second Affiliated Hospital (Jiande Branch), School of Medicine, Zhejiang University Jiande China
3. Obstetrics and Gynecology Department Union Hospital, Tongji Medical College, Huazhong University of Science and Technology Wuhan China