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.
Schellenbaum GD, Rea TD, Heckbert SR, Smith NL, Lumley T, Roger VL, Kitzman DW, Taylor HA, Levy D, Psaty BM.Schellenbaum GD, et al. Among authors: heckbert sr.Am J Epidemiol. 2004 Oct 1;160(7):628-35. doi: 10.1093/aje/kwh268.Am J Epidemiol. 2004.PMID: 15383406
Smith NL, Savage PJ, Heckbert SR, Barzilay JI, Bittner VA, Kuller LH, Psaty BM.Smith NL, et al. Among authors: heckbert sr.J Am Geriatr Soc. 2002 Mar;50(3):416-23. doi: 10.1046/j.1532-5415.2002.50103.x.J Am Geriatr Soc. 2002.PMID: 11943034