A case of ulcerative colitis complicating anti‐tumor necrosis factor treatment for rheumatoid arthritis: successful treatment with leukocytapheresis. (16th July 2012) - Horikoshi, Hideyuki; Takada, Kunio; Higuchi, Tomoaki; Yoshikawa, Takahiro; Matsumoto, Mitsuyo; Suzuki, Kimihiro