1. Department of Gynecology and Obstetrics, The Third Affiliated Hospital of Soochow University, Changzhou, P.R. China
2. Department of Gynecology and Obstetrics, Dushu Lake Hospital Affiliated to Soochow University (Medical Center of Soochow University), Suzhou, P.R. China
3. Department of Pathology, Changzhou Hospital of Traditional Chinese Medicine, Changzhou, P.R. China
4. Department of Urology, The Third Affiliated Hospital of Soochow University, Changzhou, P.R. China