Article
Familial aggregation of Parkinson's disease: a meta-analysis.
Movement disorders : official journal of the Movement Disorder Society - 15 Jun 2008
Thacker Evan L, Ascherio Alberto
Abstract excerpt
We sought to determine the relative risk (RR) of Parkinson's disease (PD) for having a first-degree relative with PD versus having no first-degree relative with PD. Studies of familial aggregation of PD were identified by searching Medline and other sources. From each study, RRs were extracted or calculated based on the published data. Studies were categorized according to methodological characteristics, as well...
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