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.
Wells MB, Sarkadi A, Salari R.Wells MB, et al.Scand J Public Health. 2016 May;44(3):274-80. doi: 10.1177/1403494815618841. Epub 2015 Dec 7.Scand J Public Health. 2016.PMID: 26644160