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.
van Vlijmen EF, Brouwer JL, Veeger NJ, Eskes TK, de Graeff PA, van der Meer J.van Vlijmen EF, et al.Arch Intern Med. 2007 Feb 12;167(3):282-9. doi: 10.1001/archinte.167.3.282.Arch Intern Med. 2007.PMID: 17296885