Article
Clustering of Parkinson disease: shared cause or coincidence?
Archives of neurology - 1 Jul 2004
Kumar Ajit, Calne Susan M, Schulzer Michael, Mak Edwin, Wszolek Zbigniew, Van Netten Chris, Tsui Joseph K C, Stoessl A Jon, Calne Donald B
Abstract excerpt
BACKGROUND: The spatial and temporal pattern of excessive disease occurrence, termed clustering, may provide clues about the underlying etiology. OBJECTIVE: To report the occurrence of 3 clusters of Parkinson disease (PD) in Canada. DESIGN AND PATIENTS: We determined the population groups containing the clusters, geographical limits, and duration of exposure to the specific environments. We tested whether there...
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