RT Journal Article SR Electronic T1 Chronic obstructive pulmonary disease: exercise and rehabilitation JF Thorax JO Thorax FD BMJ Publishing Group Ltd and British Thoracic Society SP A15 OP A18 VO 63 IS Suppl 7 YR 2008 UL http://thorax.bmj.com/content/63/Suppl_7/A15.abstract AB