1. Shandong University Department of Gynecology and Obstetrics, Qilu Hospital (Qingdao), Cheeloo College of Medicine, , Qingdao, Shandong, China
2. Shandong University Department of Obstetrics and Gynecology, Shandong Provincial Hospital, , Jinan, Shandong , China
3. Cheeloo College of Medicine,Shandong University Medical Integration and Practice Center, , Jinan, Shandong , China
4. Shandong Provincial Hospital Gynecology Laboratory, , Jinan, Shandong , China