Accepted for Publication: May 18, 2011.
Author Contributions: Mr Engelmann and Dr Jordan 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: Engelmann and Jordan. Acquisition of data: Engelmann and Jordan. Analysis and interpretation of data: Engelmann and Jordan. Drafting of the manuscript: Engelmann and Jordan. Critical revision of the manuscript for important intellectual content: Engelmann and Jordan. Statistical analysis: Engelmann and Jordan. Administrative, technical, and material support: Engelmann. Study supervision: Jordan.
Financial Disclosure: Dr Jordan has served as a consultant for Berlin Heart.
Funding/Support: Dr Jordan is supported by grant K23NS062110 from the National Institute of Neurological Disorders and Stroke.
Role of the Sponsor: The funding agency had no role in the design and conduct of the study; collection, management, analysis, and interpretation of the data; or preparation, review, or approval of the manuscript.
Additional Contributions: Victoria H. Goode, MLIS, assisted with the design and conduct of the study.