RT Journal Article SR Electronic T1 Similar rates of relapse and time to return to normal activity with 2 or 5 days of systemic corticosteroids after asthma exacerbation but study confirmation of equivalence would require further study JF Evidence Based Medicine JO Evid Based Med FD BMJ Publishing Group Ltd SP 23 OP 24 DO 10.1136/ebmed.2011.100257 VO 17 IS 1 A1 Brian H Rowe YR 2012 UL http://ebm.bmj.com/content/17/1/23.abstract AB