1. Department of Gynecology, Xuzhou City Hospital of Chinese Medicine, Xuzhou, Jiangsu 221003, P.R. China
2. Department of Obstetrics and Gynecology, Lishui Hospital of Chinese Medicine, Lishui, Zhejiang 323000, P.R. China
3. Department of Endocrinology, Xuzhou City Hospital of Chinese Medicine, Xuzhou, Jiangsu 221003, P.R. China
4. Department of Science and Education, Xuzhou City Hospital of Chinese Medicine, Xuzhou, Jiangsu 221003, P.R. China
5. Department of Gynecology, Jiangsu Provincial Hospital of Chinese Medicine, Nanjing, Jiangsu 210029, P.R. China