RT Journal Article SR Electronic T1 In two parallel pragmatic equivalence trials, leukotriene receptor antagonists as initial therapy for asthma compared with inhaled corticosteroids and as add on therapy to ICS compared with adding long-acting β agonists provided equivalent short-term asthma quality of life but were associated with more medication switches JF Evidence Based Medicine JO Evid Based Med FD BMJ Publishing Group Ltd SP 44 OP 45 DO 10.1136/ebm.2011.100140 VO 17 IS 2 A1 J Mark FitzGerald YR 2012 UL http://ebm.bmj.com/content/17/2/44.abstract AB