RT Journal Article SR Electronic T1 Chronic obstructive pulmonary disease • 12: New treatments for COPD JF Thorax JO Thorax FD BMJ Publishing Group Ltd and British Thoracic Society SP 803 OP 808 DO 10.1136/thorax.58.9.803 VO 58 IS 9 A1 P J Barnes YR 2003 UL http://thorax.bmj.com/content/58/9/803.abstract AB