1. Therapeutic Endoscopic Ultrasound Group Osaka Japan
2. Faculty of Medicine Department of Gastroenterology and Hepatology Kindai University Osaka‐Sayama Japan
3. Department of Gastroenterology Japanese Red Cross Wakayama Medical Center Wakayama Japan
4. Second Department of Internal Medicine Osaka Medical College Takatsuki Japan
5. Department of Gastroenterology Nakatsu Municipal Hospital Nakatsu Japan
6. Department of Gastroenterology Saku Central Hospital Advanced Care Center Saku Japan
7. Second Department of Internal Medicine Wakayama Medical University Wakayama Japan
8. Department of Gastroenterology and Hepatology Okayama University Graduate School of Medicine Dentistry and Pharmaceutical Sciences Okayama Japan
9. Department of Gastroenterology Oita San‐ai Medical Center Oita Japan
10. Clinical Research Center Kindai University Hospital Osaka‐Sayama Japan