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.
Fihn SD, McDonell MB, Vermes D, Henikoff JG, Martin DC, Callahan CM, Kent DL, White RH.Fihn SD, et al. Among authors: mcdonell mb.J Gen Intern Med. 1994 Mar;9(3):131-9. doi: 10.1007/BF02600026.J Gen Intern Med. 1994.PMID: 8195911Clinical Trial.
Fihn SD, Callahan CM, Martin DC, McDonell MB, Henikoff JG, White RH.Fihn SD, et al. Among authors: mcdonell mb.Ann Intern Med. 1996 Jun 1;124(11):970-9. doi: 10.7326/0003-4819-124-11-199606010-00004.Ann Intern Med. 1996.PMID: 8624064
Fan VS, Burman M, McDonell MB, Fihn SD.Fan VS, et al. Among authors: mcdonell mb.J Gen Intern Med. 2005 Mar;20(3):226-33. doi: 10.1111/j.1525-1497.2005.40135.x.J Gen Intern Med. 2005.PMID: 15836525Free PMC article.