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.
Foy CA, McCormack LJ, Knowler WC, Barrett JH, Catto A, Grant PJ.Foy CA, et al. Among authors: mccormack lj.J Med Genet. 1996 Apr;33(4):336-7. doi: 10.1136/jmg.33.4.336.J Med Genet. 1996.PMID: 8730292Free PMC article.