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.
Hack WW, Sijstermans K, van der Voort-Doedens LM, Meijer RW, Heij HA, Delemarre-van de Waal HA, Pierik FH.Hack WW, et al.Ned Tijdschr Geneeskd. 2008 Feb 2;152(5):246-52.Ned Tijdschr Geneeskd. 2008.PMID: 18333538Review.Dutch.