1. Department of Gastroenterology and Hepatology; Nagoya University Graduate School of Medicine; Nagoya Japan
2. Department of Endoscopy; Nagoya University Hospital; Nagoya Japan
3. Department of Psychiatry; Nagoya University Graduate School of Medicine; Nagoya Japan
4. Department of Liver, Biliary Tract, and Pancreas Diseases; Fujita Health University Hospital; Toyoake Japan