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.
Pham DQ, Nogid A, Plakogiannis R.Pham DQ, et al.Am J Health Syst Pharm. 2008 Mar 15;65(6):521-31. doi: 10.2146/ajhp070248.Am J Health Syst Pharm. 2008.PMID: 18319497Review.