1. Department of Urology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China (mainland)
2. Department of Ultrasound, Affiliated Hospital of North Sichuan Medical College, Nanchong, Sichuan, China (mainland)
3. Department of Urology, Affiliated Hospital of North Sichuan Medical College, Nanchong, Sichuan, China (mainland)