Are sperm counts declining? Or did we just change our spectacles?
Department of Human Metabolism, University of Sheffield, Sheffield S10 2SF, UK. A.Pacey@Sheffield.ac.uk
Allan A
AA
Pacey
D006801:Humans; D008297:Male; D009845:Oligospermia / Q000453:epidemiology; D011786:Quality Control; D013076:Sperm Count / Q000379:methods / Q000592:standards