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.
1 From the University of North Carolina School of Medicine, Chapel Hill (L.D.S., A.O.D.H.); and the Institute of Public and Preventive Health, Augusta University, Augusta, GA (T.B.).
1 From the University of North Carolina School of Medicine, Chapel Hill (L.D.S., A.O.D.H.); and the Institute of Public and Preventive Health, Augusta University, Augusta, GA (T.B.).