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.
Vik A, Aas FE, Anonsen JH, Bilsborough S, Schneider A, Egge-Jacobsen W, Koomey M.Vik A, et al. Among authors: koomey m.Proc Natl Acad Sci U S A. 2009 Mar 17;106(11):4447-52. doi: 10.1073/pnas.0809504106. Epub 2009 Feb 26.Proc Natl Acad Sci U S A. 2009.PMID: 19251655Free PMC article.
Gotschlich EC, Seiff ME, Blake MS, Koomey M.Gotschlich EC, et al. Among authors: koomey m.Proc Natl Acad Sci U S A. 1987 Nov;84(22):8135-9. doi: 10.1073/pnas.84.22.8135.Proc Natl Acad Sci U S A. 1987.PMID: 2825179Free PMC article.
Winther-Larsen HC, Hegge FT, Wolfgang M, Hayes SF, van Putten JP, Koomey M.Winther-Larsen HC, et al. Among authors: koomey m.Proc Natl Acad Sci U S A. 2001 Dec 18;98(26):15276-81. doi: 10.1073/pnas.261574998.Proc Natl Acad Sci U S A. 2001.PMID: 11752467Free PMC article.