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.
Log T, Hartz I, Handal M, Tverdal A, Furu K, Skurtveit S.Log T, et al. Among authors: tverdal a.Pharmacoepidemiol Drug Saf. 2011 Jan;20(1):90-8. doi: 10.1002/pds.2066. Epub 2010 Dec 1.Pharmacoepidemiol Drug Saf. 2011.PMID: 21182157
Hartz I, Lundesgaard E, Tverdal A, Skurtveit S.Hartz I, et al. Among authors: tverdal a.Scand J Public Health. 2009 May;37(3):320-6. doi: 10.1177/1403494808101372. Epub 2009 Jan 30.Scand J Public Health. 2009.PMID: 19181823Free article.