1. Center for Reproductive Medicine Cheeloo College of Medicine Shandong University Jinan China
2. The Key Laboratory of Reproductive Endocrinology of Ministry of Education National Research Center for Assisted Reproductive Technology and Reproductive Genetics Jinan China
3. Department of Reproductive Medicine Affiliated Hospital of Jining Medical University Jining China
4. Center for Reproductive Medicine Yantai Yuhuangding Hospital Yantai China
5. Department of Reproductive Medicine Linyi People's Hospital Linyi China
6. Department of Obstetrics and Gynecology Center for Reproductive Medicine Qilu Hospital of Shandong University Jinan China
7. Reproductive Hospital of Weifang Medical University Weifang China
8. Center for Reproductive Medicine The Affiliated Hospital of Qingdao University Qingdao China
9. Center for Reproductive Medicine Qingdao Women and Children's Hospital Qingdao University Qingdao China
10. Center for Reproductive Medicine Linyi Maternal and Child Health Care Hospital Linyi China