1 Department of Urology Surgery, The First Affiliated Hospital of Xiamen University, Xiamen, China. Electronic address: zhengshengliu@163.com.
2 Department of Urology Surgery, The First Affiliated Hospital of Xiamen University, Xiamen, China.
3 Department of Urology Surgery, The First Affiliated Hospital of Xiamen University, Xiamen, China. Electronic address: zkyken@163.com.
4 Department of Urology Surgery, The First Affiliated Hospital of Xiamen University, Xiamen, China; Department of Clinical Medicine, Fujian Medical University, Fuzhou, China. Electronic address: xmcua2007@sina.com.