About the Authors

Yu Nishida

Affiliation Department of Gastroenterology, Osaka City University Graduate School of Medicine, Osaka, Japan

Shuhei Hosomi

m1265271@med.osaka-cu.ac.jp

Affiliation Department of Gastroenterology, Osaka City University Graduate School of Medicine, Osaka, Japan

Hirokazu Yamagami

Affiliation Department of Gastroenterology, Osaka City University Graduate School of Medicine, Osaka, Japan

Tomomi Yukawa

Affiliation Department of Gastroenterology, Osaka City University Graduate School of Medicine, Osaka, Japan

Koji Otani

Affiliation Department of Gastroenterology, Osaka City University Graduate School of Medicine, Osaka, Japan

Yasuaki Nagami

Affiliation Department of Gastroenterology, Osaka City University Graduate School of Medicine, Osaka, Japan

Fumio Tanaka

Affiliation Department of Gastroenterology, Osaka City University Graduate School of Medicine, Osaka, Japan

Koichi Taira

Affiliation Department of Gastroenterology, Osaka City University Graduate School of Medicine, Osaka, Japan

Noriko Kamata

Affiliation Department of Gastroenterology, Osaka City University Graduate School of Medicine, Osaka, Japan

Tetsuya Tanigawa

Affiliation Department of Gastroenterology, Osaka City University Graduate School of Medicine, Osaka, Japan

Masatsugu Shiba

Affiliation Department of Gastroenterology, Osaka City University Graduate School of Medicine, Osaka, Japan

Kenji Watanabe

Affiliations Department of Gastroenterology, Osaka City University Graduate School of Medicine, Osaka, Japan, Department of Gastroenterology, Osaka City General Hospital, Osaka, Japan

Toshio Watanabe

Affiliation Department of Gastroenterology, Osaka City University Graduate School of Medicine, Osaka, Japan

Kazunari Tominaga

Affiliation Department of Gastroenterology, Osaka City University Graduate School of Medicine, Osaka, Japan

Yasuhiro Fujiwara

Affiliation Department of Gastroenterology, Osaka City University Graduate School of Medicine, Osaka, Japan

Competing Interests

Tetsuya Tanigawa, Toshio Watanabe, Kazunari Tominaga, and Yasuhiro Fujiwara are faculty members of a course sponsored by Eisai Co., Ltd. The other authors declare that they have no conflicts of interest, and that there were no external funding sources for this study. This does not alter the authors' adherence to PLOS ONE policies on sharing data and materials.

Author Contributions

Conceptualization: SH HY. Formal analysis: SH Y. Nagami. Investigation: Y. Nishida SH. Methodology: SH HY. Resources: HY TY NK. Supervision: SH HY YF. Validation: TY. Visualization: Y. Nishida SH. Writing – original draft: Y. Nishida SH. Writing – review & editing: KO Y. Nagami FT K. Taira TT MS KW TW K. Tominaga YF.