1. Center for Reproductive Medicine, Reproductive Hospital Affiliated with Shandong University, Jinan, 250012, Shandong, PR China
2. Department of Endocrine, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, 250012, Shandong, PR China
3. Department of General Surgery, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, 250012, Shandong, PR China