1. Department of Urology, Tianjin Institute of Urology, The Second Hospital of Tianjin Medical University, Tianjin Medical University, Tianjin, China
2. Department of Stomatology, The Second Hospital of Tianjin Medical University, Tianjin Medical University, Tianjin, China
3. School of Medical Technology, Tianjin Medical University, Tianjin, China
4. Department of Urology, The First Affiliated Hospital of Jinzhou Medical University, Jinzhou, Liaoning, China