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van der Kooi EL, de Greef JC, Wohlgemuth M, Frants RR, van Asseldonk RJ, Blom HJ, van Engelen BG, van der Maarel SM, Padberg GW.van der Kooi EL, et al.Neuromuscul Disord. 2006 Nov;16(11):766-9. doi: 10.1016/j.nmd.2006.08.005. Epub 2006 Sep 26.Neuromuscul Disord. 2006.PMID: 17005397Free article.