1. Department of Gastroenterology and Hepatology; Nagoya University Graduate School of Medicine; Nagoya Japan
2. Department of Internal Medicine; Banbuntane Hotokukai Hospital; Fujita Health University, School of Medicine; Nagoya Japan
3. Division of Liver and Biliary Diseases; Department of Internal Medicine; Fujita Health University; Toyoake Japan
4. Department of Gastroenterology; Ogaki Municipal Hospital; Ogaki Japan