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Martínez-Martín P, Benito-León J, Alonso F, Catalán MJ, Pondal M, Tobías A, Zamarbide I.Martínez-Martín P, et al.Mov Disord. 2003 Sep;18(9):985-92. doi: 10.1002/mds.10479.Mov Disord. 2003.PMID: 14502665