1. Department of Obstetrics and Gynecology; Center for Reproductive Medicine; The Affiliated Drum Tower Hospital of Nanjing University Medical School; Nanjing China
2. Central Research Lab; The Affiliated Drum Tower Hospital of Nanjing University Medical School; Nanjing China
3. Department of Pathology; The Affiliated Drum Tower Hospital of Nanjing University Medical School; Nanjing China