Gastroenterology Medicine Center, Shonan Kamakura General Hospital, 1370-1, Okamoto, Kamakura, Kanagawa, 247-8533, Japan

Chikamasa Ichita

Department of Health Data Science, Yokohama City University, 22-2, Seto, Kanazawa-ku, Yokohama, Kanagawa, 236-0027, Japan

Chikamasa Ichita, Tadahiro Goto & Sayuri Shimizu

TXP Medical Co., Ltd., 41-1 H1O Kanda 706, Kanda Higashimatsushita-cho, Chiyoda-ku, Tokyo, 101-0042, Japan

Tadahiro Goto

Department of Clinical Epidemiology and Health Economics, School of Public Health, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan

Tadahiro Goto

CI designed and drafted this manuscript. TG and SS revised it.