1. The Third Clinical Medical College, Nanjing University of Chinese Medicine, Nanjing, China
2. Department of Obstetrics and Gynecology, Affiliated Hospital of Integrated Traditional Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing Jiangsu, China
3. Department of Obstetrics and Gynecology, Jiangsu Province Academy of Traditional Chinese Medicine, Nanjing, China
4. Department of Obstetrics and Gynecology, Suzhou Hospital of Traditional Chinese Medicine Affiliated to Nanjing University of Chinese Medicine, Suzhou, China
5. Department of Pathology, Jiangsu Province Academy of Traditional Chinese Medicine, Nanjing, China.