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.
Tverdal A, Hjellvik V, Selmer R.Tverdal A, et al.Eur Heart J. 2008 Nov;29(22):2772-81. doi: 10.1093/eurheartj/ehn435. Epub 2008 Sep 27.Eur Heart J. 2008.PMID: 18820324
Stensvold I, Urdal P, Thürmer H, Tverdal A, Lund-Larsen PG, Foss OP.Stensvold I, et al. Among authors: tverdal a.Eur Heart J. 1992 Sep;13(9):1155-63. doi: 10.1093/oxfordjournals.eurheartj.a060331.Eur Heart J. 1992.PMID: 1396823
Tverdal A, Stensvold I, Solvoll K, Foss OP, Lund-Larsen P, Bjartveit K.Tverdal A, et al.BMJ. 1990 Mar 3;300(6724):566-9. doi: 10.1136/bmj.300.6724.566.BMJ. 1990.PMID: 2108750Free PMC article.
Stensvold I, Tverdal A, Foss OP.Stensvold I, et al. Among authors: tverdal a.J Clin Epidemiol. 1989;42(9):877-84. doi: 10.1016/0895-4356(89)90101-7.J Clin Epidemiol. 1989.PMID: 2789271
Stensvold I, Tverdal A, Urdal P, Graff-Iversen S.Stensvold I, et al. Among authors: tverdal a.BMJ. 1993 Nov 20;307(6915):1318-22. doi: 10.1136/bmj.307.6915.1318.BMJ. 1993.PMID: 8257886Free PMC article.