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Regional differences in semen quality in Europe.
Jørgensen N, Andersen AG, Eustache F, Irvine DS, Suominen J, Petersen JH, Andersen AN, Auger J, Cawood EH, Horte A, Jensen TK, Jouannet P, Keiding N, Vierula M, Toppari J, Skakkebaek NE. Jørgensen N, et al. Among authors: keiding n. Hum Reprod. 2001 May;16(5):1012-9. doi: 10.1093/humrep/16.5.1012. Hum Reprod. 2001. PMID: 11331653
Poor semen quality may contribute to recent decline in fertility rates.
Jensen TK, Carlsen E, Jørgensen N, Berthelsen JG, Keiding N, Christensen K, Petersen JH, Knudsen LB, Skakkebaek NE. Jensen TK, et al. Among authors: keiding n. Hum Reprod. 2002 Jun;17(6):1437-40. doi: 10.1093/humrep/17.6.1437. Hum Reprod. 2002. PMID: 12042257
Association of in utero exposure to maternal smoking with reduced semen quality and testis size in adulthood: a cross-sectional study of 1,770 young men from the general population in five European countries.
Jensen TK, Jørgensen N, Punab M, Haugen TB, Suominen J, Zilaitiene B, Horte A, Andersen AG, Carlsen E, Magnus Ø, Matulevicius V, Nermoen I, Vierula M, Keiding N, Toppari J, Skakkebaek NE. Jensen TK, et al. Among authors: keiding n. Am J Epidemiol. 2004 Jan 1;159(1):49-58. doi: 10.1093/aje/kwh002. Am J Epidemiol. 2004. PMID: 14693659
Estimation of the frequency of involuntary infertility on a nation-wide basis.
Slama R, Hansen OK, Ducot B, Bohet A, Sorensen D, Giorgis Allemand L, Eijkemans MJ, Rosetta L, Thalabard JC, Keiding N, Bouyer J. Slama R, et al. Among authors: keiding n. Hum Reprod. 2012 May;27(5):1489-98. doi: 10.1093/humrep/des070. Epub 2012 Mar 12. Hum Reprod. 2012. PMID: 22416008 Free article.
256 results