Submitted for Publication: July 16, 2014; final revision received November 26, 2014; accepted December 17, 2014.
Published Online: May 14, 2015. doi:10.1001/jamaoto.2015.0706.
Study concept and design: Sioshansi, Miller, Bauman.
Acquisition, analysis, or interpretation of data: Sioshansi, Vezina, Yaun, Bauman.
Drafting of the manuscript: Sioshansi, Miller, Bauman.
Critical revision of the manuscript for important intellectual content: Sioshansi, Vezina, Yaun, Bauman.
Administrative, technical, and material support: Sioshansi, Bauman.
Study supervision: Vezina, Miller, Bauman.
Conflict of Interest Disclosures: None reported.