He has coauthored more than 18 publications. The research interests of Dr. Nirei's group include Chronic Hepatitis type C, Chronic Hepatitis type B, hepatocellular carcinoma and diabetes mellitus. Corresponding author: Kazushige Nirei MD, PhD. Division of Gastroenterology and Hepatology, Department of Medicine, Nihon University School of Medicine, Japan. 30-1, Oyaguchikami-cho, Itabashi-ku, Tokyo 173-8610, Japan. Phone: +81-3-3972-8111 Ext.2424 Fax: +81-3-3956-8496 E-mail: nirei.kazushigeac.jp.