1. Division of Urology, Department of Surgery, Chang Gung Memorial Hospital, Chia-Yi
2. Graduate Institute of Clinical Medical Sciences, Chang Gung University College of Medicine, Kaohsiung
3. Division of Urology, Department of Surgery, Chang Gung Memorial Hospital, Lin-Kou
4. Lin-Kou, Taiwan, R.O.C.
5. Department of Radiology, Chang Gung Memorial Hospital, Chia-Yi