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Duvivier RJ, van Dalen J, Muijtjens AM, Moulaert VR, van der Vleuten CP, Scherpbier AJ.Duvivier RJ, et al. Among authors: moulaert vr.BMC Med Educ. 2011 Dec 6;11:101. doi: 10.1186/1472-6920-11-101.BMC Med Educ. 2011.PMID: 22141427Free PMC article.