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.
Campbell KA, Thomas AM, Cook LJ, Keenan HT.Campbell KA, et al. Among authors: cook lj.JAMA Pediatr. 2013 Mar 1;167(3):236-42. doi: 10.1001/2013.jamapediatrics.324.JAMA Pediatr. 2013.PMID: 23318576Free PMC article.
Gilkey S, Armstrong M, Alexander R, Osong B, Sribnick EA, Stanley RM, Groner JI, Cook LJ, Lu B, Xiang H.Gilkey S, et al. Among authors: cook lj.BMJ Open. 2024 Nov 28;14(11):e090141. doi: 10.1136/bmjopen-2024-090141.BMJ Open. 2024.PMID: 39613432Free PMC article.