[1] Yonsei Univ, Coll Med, Dept Internal Med, Seoul 120752, South Korea
[2] Yonsei Univ, Coll Med, Dept Pathol, Seoul 120752, South Korea
[3] Yonsei Univ, Coll Med, Dept Thorac & Cardiovasc Surg, Seoul 120752, South Korea
[4] Yonsei Univ, Coll Med, Inst Gastroenterol, Seoul 120752, South Korea
[5] Liver Cirrhosis Clin Res Ctr, Seoul, South Korea