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.
Zechmeister-Machhart M, Hufnagl P, Uhrin P, Korschineck I, Binder BR, Geiger M.Zechmeister-Machhart M, et al. Among authors: hufnagl p.Gene. 1997 Feb 20;186(1):61-6. doi: 10.1016/s0378-1119(96)00681-6.Gene. 1997.PMID: 9047345