1. Department of Regenerative Medicine, Center for Innovative Clinical Medicine Okayama University Hospital Okayama Japan
2. Department of Gastroenterology and Hepatology Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences Okayama Japan
3. Department of Gastroenterology Okayama City Hospital Okayama Japan
4. Department of Gastroenterology Okayama Saiseikai General Hospital Okayama Japan
5. Department of Gastroenterology Japanese Red Cross Okayama Hospital Okayama Japan
6. Department of Gastroenterology Hiroshima City Hospital Okayama Japan
7. Department of Gastroenterology Mitoyo General Hospital Okayama Japan
8. Department of Gastroenterology Sumitomo Besshi Hospital Okayama Japan
9. Department of Gastroenterology Kurashiki Central Hospital Okayama Japan
10. Department of Gastroenterology Japanese Red Cross Himeji Hospital Okayama Japan
11. Department of Gastroenterology Fukuyama City Hospital Okayama Japan