Cholerton BA, Zabetian CP, Quinn JF, Chung KA, Peterson A, Espay AJ, Revilla FJ, Devoto J, Watson GS, Hu SC, Edwards KL, Montine TJ, & Leverenz JB. (2013). Pacific northwest udall center of excellence clinical consortium: study design and baseline cohort characteristics. Journal of Parkinsons Disease, 3(2), 205-214. doi: 10.3233/JPD-130189. Geriatric Research, Education, & Clinical Center, Veterans Affairs Puget Sound Health Care System, Seattle, WA, USA Department of Psychiatry & Behavioral Science, University of Washington School of Medicine, Seattle, WA, USA. Background: The substantial proportion of individuals with Parkinson's disease (PD) who have or are expected to develop concomitant cognitive impairment emphasizes the need for large, well-characterized participant cohorts to serve as a basis for research into the causes, manifestations, and potential treatments of cognitive decline in those with PD. Objective: To establish a multi-site clinical core tha...