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Engbers HM, Berger R, van Hasselt P, de Koning T, de Sain-van der Velden MG, Kroes HY, Visser G.Engbers HM, et al.Ann Neurol. 2008 Aug;64(2):212-7. doi: 10.1002/ana.21435.Ann Neurol. 2008.PMID: 18570304