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Hoogervorst EL, de Jonge P, Jelles B, Huyse FJ, Heeres I, van der Ploeg HM, Uitdehaag BM, Polman CH.Hoogervorst EL, et al. Among authors: uitdehaag bm.J Neurol Neurosurg Psychiatry. 2003 Jan;74(1):20-4. doi: 10.1136/jnnp.74.1.20.J Neurol Neurosurg Psychiatry. 2003.PMID: 12486260Free PMC article.