Accepted for Publication: April 4, 2012.
Published Online: August 27, 2012. doi:10.1001 /archpediatrics.2012.793
Author Contributions: Dr Brown had full access to all the data in the study and takes responsibility for the integrity of the data and the accuracy of the data analysis. Study concept and design: Brown, Copeland, and Kahn. Acquisition of data: Brown. Analysis and interpretation of data: Brown, Copeland, Sucharew, and Kahn. Drafting of the manuscript: Brown and Kahn. Critical revision of the manuscript for important intellectual content: Brown, Copeland, Sucharew, and Kahn. Statistical analysis: Brown and Sucharew. Administrative, technical, and material support: Brown and Copeland. Study supervision: Copeland and Kahn.
Financial Disclosure: None reported.
Funding/Support: This project was supported by funds from the Bureau of Health Professions, the Health Resources and Services Administration, and the Department of Health and Human Services, under a Ruth L. Kirschstein National Research Service Award (T32 HP10027-12-00). Biostatistical and data management support was provided in part by an Institutional Clinical and Translational Science Award (National Institutes of Health/National Center for Research Resources grant 5UL1RR026314-3).
Online-Only Material: Listen to an author interview about this article, and others, at http://bit.ly/L4By6t.
Additional Contributions: We thank Peter Margolis, MD, PhD, for guidance and suggestions and Shelby Brauer, BSN, for assistance with data collection.