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. 2016 Jun 15;6(6):e011384. doi: 10.1136/bmjopen-2016-011384

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Meta-analysis of the outcome of hypoxia by study and medication. CH/NO, chloral hydrate/nitrous oxide; Ev, number of events; IM, intramuscular; IN, intranasal; IV, intravenous; KMO, ketamine/midazolam/opioid; Trt, total number of children/sedations.