Submitted for Publication: June 25, 2014; final revision received September 22, 2014; accepted October 6, 2014.
Published Online: January 29, 2015. doi:10.1001/jamaoto.2014.3574.
Study concept and design: Kieliszak, Faiz, Joshi.
Acquisition, analysis, or interpretation of data: Gill, Joshi.
Drafting of the manuscript: All authors.
Critical revision of the manuscript for important intellectual content: Kieliszak, Joshi.
Statistical analysis: Gill.
Administrative, technical, or material support: Kieliszak, Faiz, Joshi.
Study supervision: Joshi.
Conflict of Interest Disclosures: None reported.