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Longman JM, I Rolfe M, Passey MD, Heathcote KE, Ewald DP, Dunn T, Barclay LM, Morgan GG.Longman JM, et al. Among authors: ewald dp.BMC Health Serv Res. 2012 Oct 30;12:373. doi: 10.1186/1472-6963-12-373.BMC Health Serv Res. 2012.PMID: 23110342Free PMC article.