1. Department of Gastroenterology National Hospital Organization Tokyo Medical Center Tokyo Japan
2. Division of Research and Development for Minimally Invasive Treatment, Cancer Center Keio University School of Medicine Tokyo Japan
3. Department of Gastroenterology and Hepatology Gunma University Graduate School of Medicine Gunma Japan
4. Biotechnology Group Tokyo Metropolitan Industrial Technology Research Institute Tokyo Japan
5. Institute for the Promotion of Business‐Regional Collaboration Hokkaido University Hokkaido Japan
6. Department of Pathology National Hospital Organization Tokyo Medical Center Tokyo Japan