RT Journal Article SR Electronic T1 Hypoxia and signs of increased work of breathing are most strongly associated with radiographic pneumonia in children JF BMJ Evidence-Based Medicine JO BMJ EBM FD BMJ Publishing Group Ltd SP 77 OP 78 DO 10.1136/bmjebm-2017-110874 VO 23 IS 2 A1 Heather J Zar YR 2018 UL http://ebm.bmj.com/content/23/2/77.abstract AB