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