Anti-proteinase 3 antineutrophil cytoplasmic antibody reflects disease activity and predicts the response to steroid therapy in ulcerative colitis oleh Yuki Aoyama, Tomoki Inaba, Sakuma Takahashi, Hisae Yasuhara, Sakiko Hiraoka, Takeshi Morimoto, Hugh Shunsuke Colvin, Masaki Wato, Midori Ando, Satoko Nakamura, Koichi Mizobuchi, Hiroyuki Okada