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Kenny A, Hyett N, Sawtell J, Dickson-Swift V, Farmer J, O'Meara P.Kenny A, et al. Among authors: sawtell j.BMC Health Serv Res. 2013 Feb 18;13:64. doi: 10.1186/1472-6963-13-64.BMC Health Serv Res. 2013.PMID: 23414561Free PMC article.Review.