1. Department of Internal Medicine, Yonsei University Wonju College of Medicine, Wonju, Korea
2. Center of Evidence Based Medicine, Institute of Convergence Science, Yonsei University, Seoul, Korea
3. Department of Internal Medicine, Hallym University College of Medicine, Chuncheon, Korea
4. Department of Internal Medicine, Kangwon National University School of Medicine, Chuncheon, Korea
5. Department of Internal Medicine, University of Ulsan College of Medicine, Gangneung, Korea
6. Department of Biostatistics Center of Biomedical Data Science, Yonsei University Wonju College of Medicine, Wonju, Korea