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.
Blackwood BP, Theodorou CM, Hebal F, Hunter M CJ.Blackwood BP, et al.Pediatr Care (Wilmington). 2016;2(3):18. doi: 10.21767/2471-805X.100018. Epub 2016 Oct 8.Pediatr Care (Wilmington). 2016.PMID: 28626836Free PMC article.