RT Journal Article SR Electronic T1 Vitamin E supplements in asthma JF Thorax JO Thorax FD BMJ Publishing Group Ltd and British Thoracic Society SP 171 OP 172 DO 10.1136/thx.2004.033001 VO 60 IS 2 A1 G P Currie A1 D K C Lee A1 W J Anderson YR 2005 UL http://thorax.bmj.com/content/60/2/171.2.abstract AB