Branco, JAlexandrino, GAlves, AReis, J2018-11-212018-11-212018J Gastrointestin Liver Dis. 2018 Sep;27(3):2181842-1121http://hdl.handle.net/10400.10/2061engColitisAdverse drug reactionsCholestyramine resinAn exceptional cause of drug-induced colitis: cholestyramine.journal article10.15403/jgld.2014.1121.273.bra