1. Department of Internal Medicine; The Catholic University of Korea, College of Medicine; Seoul Korea
2. Liver Cirrhosis Clinical Research Center; Seoul Korea
3. Department of Internal Medicine; Soonchunhyang University College of Medicine; Bucheon Korea
4. Department of Internal Medicine; Pusan National University Hospital; Busan Korea
5. Department of Internal Medicine; Chonnam National University Medical School; Gwangju Korea
6. Department of Internal Medicine; Catholic University of Daegu School of Medicine; Daegu Korea
7. Department of Internal Medicine; Hanyang University Guri Hospital; Guri Korea
8. Department of Internal Medicine; Kyungpook National University Hospital; Daegu Korea
9. Department of Internal Medicine; Yonsei University College of Medicine; Seoul Korea