Accepted for Publication: August 17, 2014.
Published Online: October 6, 2014. doi:10.1001/jamapediatrics.2014.2214.
Study concept and design: Schultz, Schapira, Lambert.
Acquisition, analysis, or interpretation of data: Schultz, Mitra, Schapira.
Drafting of the manuscript: Schultz, Schapira, Lambert.
Critical revision of the manuscript for important intellectual content: All authors.
Statistical analysis: Schultz, Mitra.
Administrative, technical, or material support: Schultz, Lambert.
Study supervision: Mitra, Schapira, Lambert.
Conflict of Interest Disclosures: Dr Lambert has participated in clinical trials for Amgen Inc and GlaxoSmithKline Inc and has been a consultant for Nestle Inc and GlaxoSmithKline Inc. No other disclosures were reported.
Funding/Support: This study was supported by the Division of Hematology, The Children’s Hospital of Philadelphia.
Role of the Funder/Sponsor: The funder had no role in the design and conduct of the study; collection, management, analysis, and interpretation of the data; preparation, review, or approval of the manuscript; and decision to submit the manuscript for publication.
Previous Presentations: Portions of this work were presented in an oral presentation at the American Society of Hematology’s 55th Annual Convention; December 9, 2013; New Orleans, Louisiana. Additionally, Dr Schultz submitted this work in partial fulfillment of the requirements for the Masters in Health Policy Research program at the University of Pennsylvania.