About the Authors

Yukie Kohata

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

Yasuhiro Fujiwara

yasu@med.osaka-cu.ac.jp

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

Takanori Watanabe

Affiliation Uehonmachi-Watanabe Clinic, Osaka, Japan

Masanori Kobayashi

Affiliation Department of Medical Education and General Practice, Osaka City University Graduate School of Medicine, Osaka, Japan

Yasuhiko Takemoto

Affiliation Department of Medical Education and General Practice, Osaka City University Graduate School of Medicine, Osaka, Japan

Noriko Kamata

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

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

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

Taichi Shuto

Affiliation Department of Medical Education and General Practice, Osaka City University Graduate School of Medicine, Osaka, Japan

Tetsuo Arakawa

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

Competing Interests

Prof. Arakawa received lecture fees from Otsuka and Eisai and research grants from Otsuka, Eisai, Astellas, Abbott Japan, Takeda, Dainippon Sumitomo, and Daiichi Sankyo. The remaining authors have no conflicts to disclose. This does not alter the authors' adherence to PLOS ONE policies on sharing data and materials.

Author Contributions

Conceived and designed the experiments: YK YF. Performed the experiments: YK Takanori Watanabe MK YT. Analyzed the data: YK MS. Wrote the paper: YK YF Takanori Watanabe MK YT NK HY TT MS Toshio Watanabe KT TS TA.