Accepted for Publication: January 25, 2012.
Author Contributions:Study concept and design: Makipour, Morgan, Postier, and Pant. Acquisition of data: Landmann, Makipour, Morgan, Pant, Liu, and Anderson. Analysis and interpretation of data: Makipour, Postier, and Liu. Drafting of the manuscript: Landmann, Makipour, and Anderson. Critical revision of the manuscript for important intellectual content: Makipour, Morgan, Postier, Pant, and Liu. Statistical analysis: Landmann. Obtained funding: Postier. Study supervision: Makipour, Postier, and Pant.
Conflict of Interest Disclosures: None reported.