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.
Siu N, Apostolakis G.Siu N, et al. Among authors: apostolakis g.Risk Anal. 1986 Mar;6(1):43-59. doi: 10.1111/j.1539-6924.1986.tb00193.x.Risk Anal. 1986.PMID: 3602495