RT Journal Article SR Electronic T1 Increased risk of mortality with liberal oxygen therapy compared with conservative oxygen therapy in critically ill adults JF BMJ Evidence-Based Medicine JO BMJ EBM FD BMJ Publishing Group Ltd SP 113 OP 114 DO 10.1136/bmjebm-2018-111054 VO 24 IS 3 A1 Richard Beasley A1 Diane Mackle YR 2019 UL http://ebm.bmj.com/content/24/3/113.abstract AB