00469nas a2200181   4500000000100000000000100001008004100002100001400043700001400057700001500071700001300086700001800099700001400117245010600131300001100237490000700248022003200255       1997                            d1 aA. Walker1 aP. Szneke1 aL. Bianchi1 aL. Field1 aL. Sutherland1 aN. Dreyer00a5-Aminosalicylates, sulfasalazine, steroid use, and complications in patients with ulcerative colitis  a816-200 v92  a0002-9270 (Print) 0002-9270