1) Komoto S, et al: Clinical differences between elderly-onset ulcerative colitis and non-elderly-onset ulcerative colitis: a nationwide survey data in Japan. J Gastroenterol Hepatol 33: 1839-1843, 2018.
2) Kobori A, et al: Interleukin-33 expression is specifically enhanced in inflamed mucosa of ulcerative colitis. J Gastroenterol 45: 999-1007, 2010.
3) Arihiro S, et al: Differential expression of mucosal addressin cell adhesion molecule-1 (MAdCAM-1) in ulcerative colitis and Crohn' s disease. Pathol Int 52: 367-374, 2002.
4) Motoya S, et al: Vedolizumab in Japanese patients with ulcerative colitis: a phase 3, randomized, double-blind, placebo-controlled study. PLoS One 14: e0212989, 2019.