Novel desensitization therapy of mesalamine intolerance in patients with ulcerative colitis Kenji Kinoshita; Shintaro Sawaguchi; Kai Toyoshima; Sonoe Yoshida; Takahiro Yamamura; Kosuke Nagai; Ikko Tanaka; Kazuteru Hatanaka; Yoshiya Yamamoto; Hirohito Naruse; Takehiko Katsurada; Naoya Sakamoto;