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Leentjens AF, Van den Akker M, Metsemakers JF, Lousberg R, Verhey FR.Leentjens AF, et al. Among authors: verhey fr.Mov Disord. 2003 Apr;18(4):414-8. doi: 10.1002/mds.10387.Mov Disord. 2003.PMID: 12671948