1. Department of Urology, Guangdong Key Laboratory of Urology, Minimally Invasive Surgery Center, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China.
2. Department of Urology, Kashgar Prefecture First People's Hospital of Kashi, Xinjiang, China.
3. Department of Urology, Kashgar Prefecture Second People's Hospital of Kashi, Xinjiang, China.
4. Department of Urology, The Sixth Affiliated Hospital of Guangzhou Medical University, Qingyuan, China.
5. Department of Urology, Shantou Central Hospital, Shantou, China.