Submitted for Publication: July 6, 2013; final revision received August 3, 2013; accepted September 23, 2013.
Published Online: November 21, 2013. doi:10.1001/jamaoto.2013.5739.
Study concept and design: Ojha, Hersh, Hartnick.
Acquisition of data: Ojha, Ashland, Hartnick.
Analysis and interpretation of data: Ashland, Hersh, Ramakrishna, Maurer, Hartnick.
Drafting of the manuscript: Ojha, Ashland, Hersh.
Critical revision of the manuscript for important intellectual content: Ashland, Hersh, Ramakrishna, Maurer, Hartnick.
Statistical analysis: Ojha, Hartnick.
Administrative, technical, and material support: Ojha.
Study supervision: Ramakrishna, Maurer, Hartnick.
Conflict of Interest Disclosures: None reported.