TY - JOUR T1 - Correction JF - Thorax JO - Thorax SP - 385 LP - 385 VL - 63 IS - 4 A2 - , Y1 - 2008/04/01 UR - http://thorax.bmj.com/content/63/4/385.3.abstract N2 - The label “OR (odds ratio)” was erroneously introduced into the headings to tables 3 and 4 in the paper by Aldington et al (Thorax 2007;62 … ER -