1. Department of Urology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, P. R. China
2. Department of Obstetrics and Gynecology, Center for Reproductive Medicine, Guangdong Armed Police Hospital, Guangzhou Medical University, Guangzhou, Guangdong, P. R. China
3. Functional Experiment Center, Guangzhou Medical University, Guangzhou, Guangdong, P. R. China
4. Department of Surgery, Women and Children’s Hospital of Foshan, Foshan, Guangdong, P. R. China
5. Department of Urology, Peking University Shenzhen Hospital, Shenzhen, Guangdong, P. R. China