1. Department of Urology Kaohsiung Municipal Ta‐Tung Hospital Kaohsiung Taiwan
2. Graduate Institute of Clinical Medicine College of Medicine Kaohsiung Medical University Kaohsiung Taiwan
3. Department of Urology Kaohsiung Medical University Hospital Kaohsiung Taiwan
4. Department of Urology Seoul National University Hospital Seoul Korea
5. S.H. Ho Urology Centre Prince of Wales Hospital The Chinese University of Hong Kong Hong Kong China