1. Department of Molecular Gastroenterology and Hepatology; Graduate School of Medical Science; Kyoto Prefectural University of Medicine; Kyoto Japan
2. Department of Molecular Gastroenterology and Hepatology; North Medical Center Kyoto Prefectural University of Medicine; Yosano Japan
3. Department of Gastroenterology; Kyoto City Hospital; Kyoto Japan
4. Department of Internal Medicine; Aiseikai Yamashina Hospital; Kyoto Japan
5. Department of Gastroenterology; Otsu Municipal Hospital; Japan
6. Department of Gastroenterology; Japanese Red Cross Kyoto Daiichi Hospital; Kyoto Japan
7. Department of Gastroenterology and Hepatology; Saiseikai Suita Hospital; Suita Japan
8. Department of Gastroenterology; Social Insurance Kyoto Hospital; Kyoto Japan
9. Department of Gastroenterology; Fukuchiyama City Hospital; Fukuchiyama Japan
10. Department of Gastroenterology; Osaka General Hospital of West Japan Railway Company; Osaka Japan
11. Department of Gastroenterology; Koseikai Takeda Hospital; Kyoto Japan
12. Center for Digestive and Liver Diseases; Nara City Hospital; Nara Japan