Accepted for Publication: August 8, 2013.
Published Online: December 16, 2013. doi:10.1001/jamapediatrics.2013.4200.
Study concept and design: McDonagh, Ozpinar, Foley.
Acquisition of data: McDonagh, Ozpinar, Foley.
Analysis and interpretation of data: McDonagh, Selph, Ozpinar.
Drafting of the manuscript: McDonagh, Ozpinar, Foley.
Critical revision of the manuscript for important intellectual content: McDonagh, Selph, Ozpinar.
Statistical analysis: McDonagh, Selph, Ozpinar.
Administrative, technical, or material support: McDonagh, Foley.
Study supervision: McDonagh.
Conflict of Interest Disclosures: None reported.
Additional Contributions: We thank David Do, BS, Gabriel Edwards, BA, Leah Fletchall, BS, Erika Sohlberg, BA, Nicole Stanley, BS, and Dallas Swanson, BS, for assistance with topic development and data collection. We also thank Leah Williams, BS, for assistance with editing and formatting of the manuscript. Ms Williams is affiliated with Oregon Health & Science University and was paid by the university for her editing assistance as part of her regular salary.