1. Department of Urology, Kaohsiung Medical University Hospital, Kaohsiung 80756, Taiwan
2. Department of Urology, School of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 80756, Taiwan
3. Graduate Institute of Clinical Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 80756, Taiwan
4. Center for Cancer Research, Kaohsiung Medical University, Kaohsiung 80756, Taiwan
5. Department of Urology, School of Medicine, Tzu Chi University, Hualien 970473, Taiwan
6. Department of Urology, Hualien Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, Hualien 970473, Taiwan