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.
Vance ML, Lipper M, Klibanski A, Biller BM, Samaan NA, Molitch ME.Vance ML, et al. Among authors: biller bm.Ann Intern Med. 1990 May 1;112(9):668-73. doi: 10.7326/0003-4819-112-9-668.Ann Intern Med. 1990.PMID: 1970714