Author Contributions: Dr Berry had full access to all of 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: Berry, D. E. Hall, Kuo, Cohen, Agrawal, M. Hall, Kueser, Neff.
Acquisition of data: Agrawal, M. Hall.
Analysis and interpretation of data: Berry, D. E. Hall, Kuo, Cohen, Agrawal, Feudtner, M. Hall, Kueser, Kaplan.
Drafting of the manuscript: Berry, D. E. Hall, Cohen, Agrawal, M. Hall, Kaplan.
Critical revision of the manuscript for important intellectual content: Berry, D. E. Hall, Kuo, Cohen, Agrawal, Feudtner, Kueser.
Statistical analysis: Berry, D. E. Hall, Cohen, Agrawal, Feudtner, M. Hall.
Obtained funding: Berry, Kueser.
Administrative, technical, or material support: Kueser.
Conflict of Interest Disclosures: All authors have completed and submitted the ICMJE Form for Disclosure of Potential Conflicts of Interest and none were reported.
Funding/Support: Dr Berry was supported by the Eunice Kennedy Shriver National Institute of Child Health and Human Development career development award (K23 HD058092). Dr Kuo was supported by grant KL2RR029883 from the Arkansas Biosciences Institute National Health Center for Research Resources.
Role of the Sponsor: These funders had no role in the design and conduct of the study; in the collection, analysis, and interpretation of the data; or in the preparation, review, or approval of the manuscript.
Additional Contributions: We thank Gordon Bass, MM, Children's Memorial Hospital; Pat Hagan, MHSA, Seattle Children's Hospital; Charles Schleien, MD, MBA, New York–Presbyterian Morgan Stanley Children's Hospital; and David Miller, BS, MSM, The Children's Medical Center of Dayton, for their help with the data analysis plan and results interpretation of this work. These persons did not receive compensation for their help with this work.