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.
Egberts TC, Smulders M, de Koning FH, Meyboom RH, Leufkens HG.Egberts TC, et al. Among authors: leufkens hg.BMJ. 1996 Aug 31;313(7056):530-1. doi: 10.1136/bmj.313.7056.530.BMJ. 1996.PMID: 8789980Free PMC article.No abstract available.
De Bruin ML, van Puijenbroek EP, Bracke M, Hoes AW, Leufkens HG.De Bruin ML, et al. Among authors: leufkens hg.Pharmacoepidemiol Drug Saf. 2006 Feb;15(2):99-105. doi: 10.1002/pds.1194.Pharmacoepidemiol Drug Saf. 2006.PMID: 16329159
van Staa TP, Smeeth L, Persson I, Parkinson J, Leufkens HG.van Staa TP, et al. Among authors: leufkens hg.Int J Epidemiol. 2008 Apr;37(2):405-13. doi: 10.1093/ije/dym296. Epub 2008 Feb 8.Int J Epidemiol. 2008.PMID: 18263647
van Staa TP, Smeeth L, Persson I, Parkinson J, Leufkens HG.van Staa TP, et al. Among authors: leufkens hg.Pharmacoepidemiol Drug Saf. 2008 May;17(5):475-84. doi: 10.1002/pds.1568.Pharmacoepidemiol Drug Saf. 2008.PMID: 18322905