Prenatal Versus Postnatal Tobacco Smoke Exposure and Intensive Care Use in Children Hospitalized With Bronchiolitis.

"Drs Mansbach and Piedra provided consultation to Regeneron Pharmaceuticals Inc. The authors declare that they have no conflict of interest."

"We thank the MARC-30 investigators, whose names are listed in the Appendix, for their continuing dedication to bronchiolitis research, and Janice A. Espinola, MPH (Department of Emergency Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, Mass), for assistance with data analysis and review of the article. Supported by grants U01 AI-67693 and K23 AI-77801 from the National Institutes of Health (Bethesda, Md). The content of this article is solely the responsibility of the authors and does not necessarily represent the official views of the National Institute of Allergy and Infectious Diseases or the National Institutes of Health."