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.
Raimondo G, Longo G, Squadrito G.Raimondo G, et al.Br Med J (Clin Res Ed). 1983 Mar 12;286(6368):845. doi: 10.1136/bmj.286.6368.845.Br Med J (Clin Res Ed). 1983.PMID: 6403109Free PMC article.No abstract available.