1. Department of Medicine and Biosystemic Science Graduate School of Medical Sciences; Kyushu University Fukuoka; Fukuoka Japan
2. Department of Human Pathology; Kanazawa University Graduate School of Medicine; Kanazawa Japan
3. Clinical Research Center in National Hospital Organization (NHO) Nagasaki Medical Center and Department of Hepatology; Nagasaki University Graduate School of Biomedical Sciences; Omura Japan
4. Department of Surgery and Science Graduate School of Medical Sciences; Kyushu University Fukuoka; Japan
5. Division of Rheumatology, Allergy and Clinical Immunology, School of Medicine; University of California at Davis; Davis CA