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.
Brouwer MW, Tebbe-Gholami M, Starink MV, van Os TA.Brouwer MW, et al.Ned Tijdschr Geneeskd. 2015;159:A8867.Ned Tijdschr Geneeskd. 2015.PMID: 25990335Dutch.