1. Department of Internal Medicine, Cha Bundang Medical Center Cha University Seongnam Republic of Korea
2. Department of Internal Medicine Yonsei University College of Medicine Seoul Republic of Korea
3. Yonsei Liver Center Severance Hospital Seoul Republic of Korea
4. Department of Internal Medicine Korea University College of Medicine Seoul Republic of Korea
5. Biostatistics Collaboration Unit, Department of Biomedical Systems Informatics Yonsei University College of Medicine Seoul Republic of Korea
6. Department of Internal Medicine, School of Medicine Kyungpook National University, Kyungpook National University Hospital Daegu Republic of Korea