1. Department of Surgery, Chang Gung Memorial Hospital at Linkou, Taoyuan, Taiwan
2. Department of Urology, Taoyuan General Hospital, Ministry of Health and Welfare, Taoyuan, Taiwan
3. Division of Urology, Department of Surgery, Chang Gung Memorial Hospital at Linkou, Taoyuan, Taiwan
4. Research Center of Urology and Kidney, Taipei Medical University (TMU-RCUK), Taipei, Taiwan
5. Department of Urology, Shuang Ho Hospital, Taipei Medical University, New Taipei City, Taiwan
6. Graduate Institute of Clinical Medical Science, College of Medicine, Chang Gung University, Taoyuan, Taiwan
7. School of Medicine, College of Medicine, Chang Gung University, Taoyuan, Taiwan.