1. Department of Urology, Chang Gung Memorial Hospital at Linkou, Taoyuan, Taiwan.
2. Department of Anatomy, School of Medicine, Chang Gung University, Taoyuan, Taiwan.
3. Department of Urology, Shuang Ho Hospital, Taipei Medical University, Taipei, Taiwan.
4. TMU Research Center of Urology and Kidney (TMU-RCUK), Taipei Medical University, Taipei, Taiwan.
5. Department of Anatomy, School of Medicine, Chang Gung University, Kwei-shan, Taoyuan, Taiwan.