1. Endoscopy Division; National Cancer Center Hospital; Tokyo Japan
2. Department of Gastrointestinal Medicine; St Mary's Hospital; Kurume Japan
3. Department of Gastroenterology; Fukuoka University Chikushi Hospital; Fukuoka Japan
4. Department of Gastrointestinal Oncology and Endoscopy; National Cancer Center Hospital East; Kashiwa Japan
5. Department of Diagnostic Imaging; Tochigi Cancer Center; Utsunomiya Japan
6. Department of Endoscopy; Niigata University Medical and Dental Hospital; Niigata Japan
7. Department of Endoscopy; Hiroshima University Hospital; Hiroshima Japan
8. Department of Gastrointestinal Oncology; Osaka Medical Center for Cancer and Cardiovascular Diseases; Osaka Japan
9. Department of Endoscopy; The Jikei University School of Medicine; Tokyo Japan
10. Division of Research and Development for Minimally Invasive Treatment; Cancer Center; School of Medicine; Keio University; Tokyo Japan
11. School of Medicine; The University of Queensland; Brisbane Australia
12. Department of Internal Medicine; National Taiwan University Hospital; Taipei Taiwan