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.
de Wit M, Delemarre-van de Waal HA, Pouwer F, Gemke RJ, Snoek FJ.de Wit M, et al. Among authors: pouwer f.Arch Dis Child. 2007 May;92(5):434-9. doi: 10.1136/adc.2006.102236.Arch Dis Child. 2007.PMID: 17449526Free PMC article.Review.