title: Instability of syllable repetition as a marker of disease progression in Parkinson's disease: a longitudinal study.
authors.affiliation: Department of Neurology, Knappschaftskrankenhaus, Ruhr-University of Bochum, Bochum, Germany. sabine.skodda@kk-bochum.de
authors.forename: Sabine
authors.initials: S
authors.lastname: Skodda
authors.forename: Andrea
authors.initials: A
authors.lastname: Flasskamp
authors.forename: Uwe
authors.initials: U
authors.lastname: Schlegel