1. Department of Urology School of Medicine College of Medicine Kaohsiung Medical University Kaohsiung Taiwan
2. Department of Urology Kaohsiung Medical University Hospital Kaohsiung Taiwan
3. Department of Urology Kaohsiung Municipal Siaogang Hospital Kaohsiung Taiwan
4. Department of Urology Kaohsiung Municipal Ta‐Tung Hospital Kaohsiung Taiwan