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.
Penning de Vries BBL, van Smeden M, Rosendaal FR, Groenwold RHH.Penning de Vries BBL, et al. Among authors: groenwold rhh.J Clin Epidemiol. 2020 May;121:55-61. doi: 10.1016/j.jclinepi.2020.01.009. Epub 2020 Jan 23.J Clin Epidemiol. 2020.PMID: 31982541Free article.
Schmidt AF, Rovers MM, Klungel OH, Hoes AW, Knol MJ, Nielen M, de Boer A, Groenwold RH.Schmidt AF, et al.J Clin Epidemiol. 2013 Jun;66(6):599-607. doi: 10.1016/j.jclinepi.2012.08.008. Epub 2013 Mar 16.J Clin Epidemiol. 2013.PMID: 23510555Free article.Review.
Schmidt AF, Groenwold RH, van Delden JJ, van der Does Y, Klungel OH, Roes KC, Hoes AW, van der Graaf R.Schmidt AF, et al.J Clin Epidemiol. 2014 Jun;67(6):635-44. doi: 10.1016/j.jclinepi.2013.12.005. Epub 2014 Mar 5.J Clin Epidemiol. 2014.PMID: 24613498Free article.Review.
Schmidt AF, Groenwold RH, Knol MJ, Hoes AW, Nielen M, Roes KC, de Boer A, Klungel OH.Schmidt AF, et al.J Clin Epidemiol. 2014 Jul;67(7):821-9. doi: 10.1016/j.jclinepi.2014.02.008. Epub 2014 Apr 24.J Clin Epidemiol. 2014.PMID: 24768005