Department of Medicine and Bioregulatory Science, Graduate School of Medical Sciences, Kyushu University,Fukuoka 812-8582, Japan
Hepato-Gastroenterology Service, Centre hospitalier universitaire de Reims, Hospital Robert Debre,F-51092 Reims, France
Digestive Diseases Branch, National Insitutes of Diabetes, Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD 20892, United States