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.
Wolff RF, Bala MM, Westwood M, Kessels AG, Kleijnen J.Wolff RF, et al. Among authors: kleijnen j.Swiss Med Wkly. 2010 May 29;140(21-22):297-306. doi: 10.4414/smw.2010.12995.Swiss Med Wkly. 2010.PMID: 20458651Free article.Review.
Reid KJ, Harker J, Bala MM, Truyers C, Kellen E, Bekkering GE, Kleijnen J.Reid KJ, et al. Among authors: kleijnen j.Curr Med Res Opin. 2011 Feb;27(2):449-62. doi: 10.1185/03007995.2010.545813. Epub 2011 Jan 3.Curr Med Res Opin. 2011.PMID: 21194394Review.