RT Journal Article SR Electronic T1 Inhaled corticosteroids in COPD JF Thorax JO Thorax FD BMJ Publishing Group Ltd and British Thoracic Society SP 655 OP 655 DO 10.1136/thx.54.7.655a VO 54 IS 7 A1 BURGE, P SHERWOOD YR 1999 UL http://thorax.bmj.com/content/54/7/655.2.abstract AB