RT Journal Article SR Electronic T1 Ibuprofen for acute pain relief in the emergency department JF BMJ Evidence-Based Medicine JO BMJ EBM FD BMJ Publishing Group Ltd SP bmjebm-2019-111312 DO 10.1136/bmjebm-2019-111312 A1 Dylan Collins YR 2020 UL http://ebm.bmj.com/content/early/2020/03/01/bmjebm-2019-111312.abstract AB