1. Department of Gastroenterology, Juntendo University School of Medicine, Japan
2. Department of Esophageal and Gastroenterological Surgery, Juntendo University School of Medicine, Japan
3. Department of Human Pathology, Juntendo University Graduate School of Medicine, Japan
4. Department of Diagnostic Pathology, Ishikawa Prefectural Central Hospital, Japan
5. Intractable Disease Research Center/Diagnostics and Therapeutics of Intractable Diseases, Juntendo University Graduate School of Medicine, Japan
6. Department of Clinical Genetics, Juntendo University, Graduate School of Medicine, Japan