Accepted for Publication: February 9, 2011.
Author Contributions: Drs Godau and Berg had full access to all the data in the study and take responsibility for the integrity of the data and the accuracy of the data analysis. Study concept and design: Godau and Berg. Acquisition of data: Godau, Knauel, Brockmann, and Maetzler. Analysis and interpretation of data: Godau, Knauel, Weber, Brockmann, Maetzler, Binder, and Berg. Drafting of the manuscript: Godau. Critical revision of the manuscript for important intellectual content: Knauel, Weber, Brockmann, Maetzler, Binder, and Berg. Statistical analysis: Godau. Obtained funding: Berg. Administrative, technical, and material support: Weber, Brockmann, Maetzler, and Binder. Study supervision: Berg.
Financial Disclosure: Dr Godau reports receiving honoraria for lectures from Novartis and travel grants from Novartis and the Movement Disorders Society. Dr Maetzler reports receiving a grant from the Robert Bosch Foundation. Dr Brockmann reports receiving honoraria for lectures from GlaxoSmithKline and travel grants from GlaxoSmithKline and the Movement Disorders Society. Dr Berg reports receiving honoraria for lectures from UCB Pharma, GlaxoSmithKline, Teva Pharma, and H. Lundbeck and for serving on scientific advisory boards for Novartis, UCB Pharma, GlaxoSmithKline, and Teva Pharma. In addition, Dr Berg reports receiving grants from the Michael J. Fox Foundation, the Federal Ministry of Education and Research, Janssen Pharmaceuticals, Teva Pharma GmbH, Solvay, and the German Parkinson's Disease Association.
Funding/Support: The PRIPS study was supported by the Michael J. Fox Foundation.
Additional Contributions: We thank all people who participated in this study.