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Smits-Engelsman BC, Niemeijer AS, van Waelvelde H.Smits-Engelsman BC, et al.Res Dev Disabil. 2011 Jul-Aug;32(4):1370-7. doi: 10.1016/j.ridd.2011.01.031. Epub 2011 Feb 23.Res Dev Disabil. 2011.PMID: 21349686
Schoemaker MM, Niemeijer AS, Flapper BC, Smits-Engelsman BC.Schoemaker MM, et al.Dev Med Child Neurol. 2012 Apr;54(4):368-75. doi: 10.1111/j.1469-8749.2012.04226.x. Epub 2012 Feb 9.Dev Med Child Neurol. 2012.PMID: 22320829Free article.