1. Korea University College of Medicine; Seoul Korea
2. Gangnam Severance Hospital; Yonsei University College of Medicine; Seoul Korea
3. Chonbuk National University Medical School; Jeonju Korea
4. School of Medicine; Kyungpook National University; Daegu Korea
5. Samsung Medical Center; Sungkyunkwan University School of Medicine; Seoul Korea
6. Inha University Hospital; Inha University School of Medicine; Incheon Korea
7. Korea University Ansan Hospital; Korea University College of Medicine; Ansan Korea
8. Yonsei University College of Medicine; Seoul Korea
9. Yonsei Liver Center; Severance Hospital; Seoul Korea