Takahiro Utsumi, Takahiro Horimatsu, Yoshitaka Nishikawa, Akira Teramoto, Daizen Hirata, Mineo Iwatate, Shinwa Tanaka, Nobuaki Ikezawa, Masaya Esaki, Shozo Osera, Chikara Ebisutani, Nobukazu Agatsuma, Hiroaki Saito, Yasushi Sano, Hiroshi Seno, DOI:10.1111/jgh.15464, Journal of Gastroenterology and Hepatology 36(8), February 2021.