^○Kenichi Goda (Dept. of Endoscopy, The Jikei University School of Medicine, Tokyo, Japan)

^○Toshiharu Sakurai (Dept. of Gastroenterology and Hepatology, Kinki University Faculty of Medicine, Osaka-Sayama, Japan)

^○John Petrini (Sansum Clinic, Santa Barbara, California, USA)

^○Shomei Ryozawa (Saitama Medical University International Medical Center, Saitama, Japan)

^○Bret T.Petersen (Mayo Clinic, USA)