Accepted for Publication: October 23, 2012.
Author Contributions: Mss Kwon and Joachim and Dr Holland had full access to all of 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: Drolet and Holland. Acquisition of data: Kwon, Joachim, Drolet, and Holland. Analysis and interpretation of data: Kwon, Siegel, Drolet, and Holland. Drafting of the manuscript: Kwon, Drolet, and Holland. Critical revision of the manuscript for important intellectual content: Kwon, Joachim, Siegel, Drolet, and Holland. Obtained funding: Drolet. Administrative, technical, and material support: Kwon, Joachim, and Drolet. Study supervision: Drolet and Holland.
Conflict of Interest Disclosures: None reported.
Funding/Support: This study was supported in part by National Institutes of Health grant 1R34AR060881-01 (Dr Drolet).
Role of the Sponsors: The sponsors had no role in the design and conduct of the study; in the collection, analysis, and interpretation of data; or in the preparation, review, or approval of the manuscript.