Article
Head injury and Parkinson's disease risk in twins
22 May 2006
Abstract excerpt
OBJECTIVE: Head injury is an inconsistently reported risk factor for Parkinson's disease (PD). Many related variables might confound this association, such as differences in childhood and adolescent lifestyles or genetically determined risk-taking behaviors. Twin studies circumvent some of these problems, because twins are genetically and environmentally much more similar than typical cases and control subjects....
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