1. Department of Physiology, Taishan Medical University, Taian, Shandong, China (mainland)
2. Department of Gynaecology, The Central Hospital of Taian, Taian, Shandong, China (mainland)
3. Center for Reproductive Medicine, Affiliated Hospital of Taishan Medical University, Taian, Shandong, China (mainland)
4. Department of Gynaecology, Affiliated Hospital of Taishan Medical University, Taian, Shandong, China (mainland)
5. Center for Reproductive Medicine, The Central Hospital of Taian, Taian, Shandong, China (mainland)