About the Authors

Kazuhiro Kashiwagi

kazuuk075@aol.com

Affiliation Center for Preventive Medicine, Keio University Hospital, Tokyo, Japan

Nagamu Inoue

Affiliation Center for Preventive Medicine, Keio University Hospital, Tokyo, Japan

Toshifumi Yoshida

Affiliation Center for Preventive Medicine, Keio University Hospital, Tokyo, Japan

Rieko Bessyo

Affiliation Center for Preventive Medicine, Keio University Hospital, Tokyo, Japan

Kazuaki Yoneno

Affiliation Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, Tokyo, Japan

Hiroyuki Imaeda

Affiliation Department of General Medicine, Saitama Medical University School of Medicine, Saitama, Japan

Haruhiko Ogata

Affiliation Center for Diagnostic and Therapeutic Endoscopy, Keio University School of Medicine, Tokyo, Japan

Takanori Kanai

Affiliation Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, Tokyo, Japan

Yoshinori Sugino

Affiliation Center for Preventive Medicine, Keio University Hospital, Tokyo, Japan

Yasushi Iwao

Affiliation Center for Preventive Medicine, Keio University Hospital, Tokyo, Japan

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceptualization: KK NI YI. Formal analysis: KK NI. Investigation: KK NI TY RB YS YI. Resources: KY HI HO TK. Supervision: YI. Writing – original draft: KK.