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Goodacre S, Wilson R, Shephard N, Nicholl J; DAVROS Research Team.Goodacre S, et al.BMJ. 2012 May 1;344:e2904. doi: 10.1136/bmj.e2904.BMJ. 2012.PMID: 22550349Free PMC article.
Goodacre S, Nelson-Piercy C, Hunt B, Chan WS.Goodacre S, et al.Emerg Med J. 2015 Jan;32(1):78-82. doi: 10.1136/emermed-2014-203871. Epub 2014 Jul 9.Emerg Med J. 2015.PMID: 25007912Review.