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Reksen O, Tverdal A, Lang-Ree JR, Glattre E, Ropstad E.Reksen O, et al. Among authors: tverdal a.Anim Reprod Sci. 1999 Dec 15;57(3-4):141-51. doi: 10.1016/s0378-4320(99)00062-7.Anim Reprod Sci. 1999.PMID: 10610034
Hoff G, Grotmol T, Skovlund E, Bretthauer M; Norwegian Colorectal Cancer Prevention Study Group.Hoff G, et al.BMJ. 2009 May 29;338:b1846. doi: 10.1136/bmj.b1846.BMJ. 2009.PMID: 19483252Free PMC article.Clinical Trial.
Stene LE, Jacobsen GW, Dyb G, Tverdal A, Schei B.Stene LE, et al. Among authors: tverdal a.J Womens Health (Larchmt). 2013 Mar;22(3):250-8. doi: 10.1089/jwh.2012.3920. Epub 2013 Feb 21.J Womens Health (Larchmt). 2013.PMID: 23428282Free PMC article.
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
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.
Heldal E, Naalsund A, Kongerud J, Tverdal A, Boe J.Heldal E, et al. Among authors: tverdal a.Tuber Lung Dis. 1996 Jun;77(3):215-9. doi: 10.1016/s0962-8479(96)90003-9.Tuber Lung Dis. 1996.PMID: 8758103