Accepted for Publication: October 28, 2013.
Published Online: February 24, 2014. doi:10.1001/jamapediatrics.2013.4906.
Study concept and design: All authors.
Acquisition of data: Freedman, Hall, Neuman.
Analysis and interpretation of data: Freedman, Hall, Shah, Aronson, Florin, Macias, Neuman.
Drafting of the manuscript: Freedman, Hall, Neuman.
Critical revision of the manuscript for important intellectual content: All authors.
Statistical analysis: Freedman, Hall, Neuman.
Administrative, technical, and material support: Freedman, Neuman.
Study supervision: Freedman, Neuman.
Conflict of Interest Disclosures: Dr Freedman acknowledges receiving in-kind study drug/placebo from GlaxoSmithKline, the manufacturer of ondansetron, for the conduct of an unrelated study. No other disclosures were reported.
Disclaimer: Dr Shah is the JAMA Pediatrics Section Editor for Clinical Challenges but was not involved in the review process or the acceptance of the manuscript.
Previous Presentation: This paper was presented at the 2013 Annual Meeting of the Pediatric Academic Societies; May 5, 2013; Washington, DC.