1. Department of Obstetrics and Gynecology Nanfang Hospital Southern Medical University Guangzhou China
2. The First Affiliated Hospital of Shenzhen University Reproductive Medicine Centre, Shenzhen Second People's Hospital Shenzhen China
3. Department of Obstetrics and Gynecology Guangdong Provincial People's Hospital Guangzhou China
4. School of Materials Science and Engineering South China University of Technology Guangzhou China
5. Department of Medicine Shenzhen University Shenzhen China
6. Department of Gynecology and Obstetrics Graduate College of Guangxi University of Traditional Chinese Medicine Nanning China
7. Shantou University Medical College Shantou China
8. Guangdong Medical University Zhanjiang China