1. Department of Urology, Yonsei University Wonju College of Medicine, Wonju, Korea.
2. Department of Nephrology, Yonsei University Wonju College of Medicine, Wonju, Korea.
3. Center of Evidence Based Medicine, Institute of Convergence Science, Yonsei University, Seoul, Korea.
4. Department of Urology, Chonnam National University Medical School, Chonnam National University Hwasun Hospital, Hwasun, Korea.
5. Department of Internal Medicine, Yonsei University Wonju College of Medicine, Wonju, Korea.
6. Department of Hematology-Oncology, Chonnam National University Medical School, Chonnam National University Hwasun Hospital, Hwasun, Korea.