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.
Moss SM, Melia J.Moss SM, et al. Among authors: melia j.Br Med Bull. 1998;54(4):791-805. doi: 10.1093/oxfordjournals.bmb.a011730.Br Med Bull. 1998.PMID: 10367415Review.