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van Dijk M, Benninga MA, Grootenhuis MA, Nieuwenhuizen AM, Last BF.van Dijk M, et al. Among authors: benninga ma.Patient Educ Couns. 2007 Jul;67(1-2):63-77. doi: 10.1016/j.pec.2007.02.002. Epub 2007 Mar 19.Patient Educ Couns. 2007.PMID: 17374472Review.