RT Journal Article SR Electronic T1 ‘White out’: a rare cause JF Thorax JO Thorax FD BMJ Publishing Group Ltd and British Thoracic Society SP 757 OP 757 DO 10.1136/thoraxjnl-2011-201409 VO 67 IS 8 A1 Tack, Gurinder A1 Ganeshan, Dhakshinamoorthy A1 Wide, Jonathan A1 Stockton, Paul YR 2012 UL http://thorax.bmj.com/content/67/8/757.abstract AB