Cognitive-Driven Activities of Daily Living Impairment as a Predictor for Dementia in Parkinson Disease: A Longitudinal Cohort Study.

Becker S, Bode M, Brockmann K, Gasser T, Michaelis K, Solbrig S, Nuerk HC, Schulte C, Maetzler W, Zimmermann M, Berg D, Liepelt-Scarfone I.