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Girzadas DV Jr, Harwood RC, Davis N, Schulze L.Girzadas DV Jr, et al. Among authors: harwood rc.Acad Emerg Med. 2004 Sep;11(9):988-91. doi: 10.1197/j.aem.2004.03.024.Acad Emerg Med. 2004.PMID: 15347554Free article.
Brignell A, Harwood RC, May T, Woolfenden S, Montgomery A, Iorio A, Williams K.Brignell A, et al. Among authors: harwood rc.Cochrane Database Syst Rev. 2022 Sep 28;9(9):CD012749. doi: 10.1002/14651858.CD012749.pub2.Cochrane Database Syst Rev. 2022.PMID: 36169177Free PMC article.Review.