Critically ill children during the 2009-2010 influenza pandemic in the United States.

Dr Randolph (principal investigator) conceived and designed the study, recruited the enrolling sites, designed the case-report forms, oversaw data acquisition and analysis, interpreted the data, drafted the manuscript, made multiple revisions, and approved the final version for submission for publication; Drs Uyeki, Rubinson, Thompson, and Rice made substantial contributions to the study conception and design, provided important input on data interpretation, revised the manuscript for important intellectual content, and approved the final version to be submitted for publication; Dr Vaughn (statistician) performed the main data analysis and interpretation, revised the manuscript for important intellectual content, and approved the final version to be submitted for publication; Mr Sullivan and Ms Yoon (study coordinators) made substantial contributions to the acquisition, analysis, and interpretation of the data, revised the manuscript for important intellectual content, and approved the final version to be submitted for publication; Ms Smoot (statistician) assisted with data acquisition and analysis, revised the manuscript for important intellectual content, and approved the final manuscript to be submitted for publication; and Drs Loftis, Helfaer, Doctor, Paden, Flori, Babbitt, Graciano, Gedeit, Sanders, Giuliano, and Zimmerman (site principal investigators) provided input on the design of the study, collected data at their sites, revised the manuscript critically for important intellectual content, and approved the final version of the manuscript before submission for publication. The findings and conclusions in this article are those of the authors and do not necessarily represent the official position of the Centers for Disease Control and Prevention or the US Department of Health and Human Services. FINANCIAL DISCLOSURE: The authors have indicated they have no financial relationships relevant to this article to disclose. Funded by the National Institutes of Health (NIH).