About the Authors

Takushi Masu

Roles Data curation, Investigation, Writing – original draft

Affiliation Division of Gastroenterology and Hepatology, Department of Internal Medicine, Nippon Medical School, Tokyo, Japan

Masanori Atsukawa

Roles Writing – original draft

momogachi@yahoo.co.jp

Affiliation Division of Gastroenterology and Hepatology, Department of Internal Medicine, Nippon Medical School, Tokyo, Japan

Katsuhisa Nakatsuka

Roles Investigation, Methodology, Writing – original draft

Affiliation Division of Gastroenterology and Hepatology, Department of Internal Medicine, Nippon Medical School, Tokyo, Japan

Masumi Shimizu

Roles Investigation

Affiliation Department of Microbiology and Immunology, Nippon Medical School, Tokyo, Japan

Daishu Miura

Roles Methodology, Supervision

Affiliation Division of Breast and Thyroid Surgery, Toranomon Hospital, Tokyo, Japan

Taeang Arai

Roles Writing – original draft

Affiliation Division of Gastroenterology and Hepatology, Department of Internal Medicine, Nippon Medical School, Tokyo, Japan

Hirotomo Harimoto

Roles Investigation

Affiliation Division of Gastroenterology and Hepatology, Department of Internal Medicine, Nippon Medical School, Tokyo, Japan

Chisa Kondo

Roles Writing – original draft

Affiliation Division of Gastroenterology and Hepatology, Department of Internal Medicine, Nippon Medical School, Tokyo, Japan

Keiko Kaneko

Roles Investigation

Affiliation Division of Gastroenterology and Hepatology, Department of Internal Medicine, Nippon Medical School, Tokyo, Japan

Seiji Futagami

Roles Supervision

Affiliation Division of Gastroenterology and Hepatology, Department of Internal Medicine, Nippon Medical School, Tokyo, Japan

Chiaki Kawamoto

Roles Supervision

Affiliation Division of Gastroenterology and Hepatology, Department of Internal Medicine, Nippon Medical School, Tokyo, Japan

Hidemi Takahashi

Roles Methodology, Supervision

Affiliation Department of Microbiology and Immunology, Nippon Medical School, Tokyo, Japan

Katsuhiko Iwakiri

Roles Supervision

Affiliation Division of Gastroenterology and Hepatology, Department of Internal Medicine, Nippon Medical School, Tokyo, Japan

Competing Interests

The authors have declared that no competing interests exist.