RT Journal Article
SR Electronic
T1 Review: corticosteroids plus long-acting β-agonists reduce exacerbations more than long-acting β-agonists alone in COPD
JF Evidence Based Medicine
JO Evid Based Med
FD BMJ Publishing Group Ltd
SP 57
OP 57
DO 10.1136/ebm.13.2.57
VO 13
IS 2
YR 2008
UL http://ebm.bmj.com/content/13/2/57.abstract
AB