1. Department of Urology, Yonsei University Wonju College of Medicine, Wonju, Korea
2. Department of Emergency Medicine, Yonsei University Wonju College of Medicine, Wonju, Korea
3. Department of Medical Informatics and Biostatistics, Yonsei University Wonju College of Medicine, Wonju, Korea
4. Center of Evidence-Based Medicine, Institute of Convergence Science, Yonsei University, Seoul, Korea