No evidence for decreasing semen quality in four birth cohorts of 1,055 Danish men born between 1950 and 1970

Laboratory manual for the examination of human semen and semen-cervical mucus interaction.

Belsey Ma, Moghissi Ks, R. Eliasson et al. · 1980 · 2.2K citations

Fertility, Reproductive Health, Gynecology +19

Are oestrogens involved in falling sperm counts and disorders of the male reproductive tract?

Richard M. Sharpe · The Lancet · 1993 · 1.9K citations

Infertility, Andrology, Urology +14

Decline in Semen Quality among Fertile Men in Paris during the Past 20 Years

Jacques Auger, Jean Marie Kunstmann, F Czyglik et al. · New England Journal of Medicine · 1995 · 1.1K citations · Full text

Evidence of deteriorating semen quality in the United Kingdom: birth cohort study in 577 men in Scotland over 11 years

Stewart Irvine, E. Cawood, D. C. Richardson et al. · BMJ · 1996 · 442 citations · Full text

Semen analyses in 1,283 men from the United States over a 25-year period: no decline in quality

Harry Fisch, Erik T. Goluboff, John H. Olson et al. · Fertility and Sterility · 1996 · 418 citations

Infertility, Andrology, Fertility +11