An official website of the United States government
The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before
sharing sensitive information, make sure you’re on a federal
government site.
The site is secure.
The https:// ensures that you are connecting to the
official website and that any information you provide is encrypted
and transmitted securely.
McQuaid EL, Everhart RS, Seifer R, Kopel SJ, Mitchell DK, Klein RB, Esteban CA, Fritz GK, Canino G.McQuaid EL, et al. Among authors: everhart rs.Pediatrics. 2012 Jun;129(6):e1404-10. doi: 10.1542/peds.2011-1391. Epub 2012 May 7.Pediatrics. 2012.PMID: 22566417Free PMC article.