Declining sperm count. Rise in semen quality between 1970 and 1990 in meta-analysis was non-significant.
Keiding
N
N
Skakkebaek
N E
NE
D000328:Adult; D006801:Humans; D008297:Male; D015201:Meta-Analysis as Topic; D008875:Middle Aged; D012661:Semen / Q000502:physiology; D013076:Sperm Count; D013223:Statistics as Topic