RT Journal Article SR Electronic T1 LABA/LAMA combinations instead of LABA/ICS combinations may prevent or delay exacerbations of COPD in some patients JF Evidence Based Medicine JO Evid Based Med FD BMJ Publishing Group Ltd SP 222 OP 222 DO 10.1136/ebmed-2016-110525 VO 21 IS 6 A1 Mario Cazzola A1 Paola Rogliani YR 2016 UL http://ebm.bmj.com/content/21/6/222.abstract AB