1. Department of Hepatology; Toranomon Hospital; Tokyo Japan
2. The 4th Department of Internal Medicine; Teikyo University School of Medicine, Mizonokuchi Hospital; Kanagawa Japan
3. Department of Neuropsychiatry; Keio University School of Medicine; Tokyo Japan
4. Toray Industries, Inc.; Tokyo Japan
5. Juntendo University Urayasu Hospital; Chiba Japan
6. Department of General Internal Medicine; Saitama Medical University Hospital; Saitama Japan