Accepted for Publication: August 5, 2011.
Author Contributions: Dr Mahoney, Ms Biello, and Mr Geller had full access to all of the data in the study and take responsibility for the integrity of the data and accuracy of the data analysis. Study concept and design: Mahoney, Resnick, and Geller. Acquisition of data: Mahoney. Analysis and interpretation of data: Mahoney, Swetter, Biello, Feuerstein, and Geller. Drafting of the manuscript: Mahoney, Swetter, and Geller. Critical revision of the manuscript for important intellectual content: Mahoney, Swetter, Biello, Resnick, Feuerstein, and Geller. Statistical analysis: Biello. Administrative, technical, and material support: Resnick and Geller. Study supervision: Mahoney and Geller.
Financial Disclosure: None reported.
Additional Contributions: Marie-France Demierre, MD, provided writing assistance and guidance throughout the project.