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In the Parkinson's Supplement to the December 2008 issue of Annals of Neurology, there is an error in the article by Marek et al (Ann Neurol 2008;64(suppl):S11-S121; DOI: 10.1002/ana.21602). The correct title should read as follows:

Biomarkers for Parkinson's disease: Tools to assess Parkinson's disease onset and progression

The Publisher regrets the error