1. Department of Urology; Affiliated Yixing Hospital of Jiangsu University; Yixing 214200 China
2. Department of Urology; State Key Laboratory of Reproductive Medicine, The First Affiliated Hospital of Nanjing Medical University; Nanjing 210029 China
3. Department of Urology; Wuxi Second People's Hospital, Nanjing Medical University; Wuxi 214002 China
4. Department of Urology and Andrology; Drum Tower Hospital; Nanjing 210008 China
5. Department of Urology; Second Affiliated Hospital of Nanjing Medical University; Nanjing 210011 China