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Rodríguez-Díez MC, Alegre M, Díez N, Arbea L, Ferrer M.Rodríguez-Díez MC, et al.BMC Med Educ. 2016 Feb 3;16:47. doi: 10.1186/s12909-016-0559-7.BMC Med Educ. 2016.PMID: 26846526Free PMC article.