1. Department of Gastroenterology and Metabology; Ehime University Graduate School of Medicine; Toon Ehime Japan
2. Center for Liver-Biliary-Pancreatic Diseases; Matsuyama Red Cross Hospital; Matsuyama Ehime Japan
3. Department of Gastroenterology; Ehime Prefectural Central Hospital; Matsuyama Ehime Japan
4. Department of Gastroenterology; Saiseikai Imabari Hospital; Imabari Ehime Japan
5. Department of Gastroenterology; Matsuyama Shimin Hospital; Matsuyama Ehime Japan
6. Department of Internal Medicine; Saiseikai Matsuyama Hospital; Matsuyama Ehime Japan
7. Department of Gastroenterology; Uwajima City Hospital; Uwajima Ehime Japan
8. Department of Gastroenterology; Ehime Prefectural Imabari Hospital; Imabari Ehime Japan
9. Department of Internal Medicine; Ehime Prefectural Niihama Hospital; Niihama Ehime Japan
10. Department of Gastroenterology; National Hospital Organization Ehime Medical Center; Toon Ehime Japan