1. Department of Urology, The Second Affiliated Hospital, Guangzhou Medical University, Guangzhou, Guangdong 510260, China
2. Department of Urology, Minimally Invasive Surgery Center, Guangdong Key Laboratory of Urology, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou 510230, China
3. Department of Urology, Shenzhen Shockwave Lithotripsy Research Institute, The Eighth Affiliated Hospital, Sun Yat-sen University, Shenzhen, Guangdong 518033, China