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Mantzari E, Vogt F, Marteau TM.Mantzari E, et al. Among authors: vogt f.BMC Health Serv Res. 2012 Sep 4;12:301. doi: 10.1186/1472-6963-12-301.BMC Health Serv Res. 2012.PMID: 22947332Free PMC article.Clinical Trial.