title: Declining sperm counts? More research is needed.
authors.affiliation: Laboratoire de Biologie de la Reproduction, CECOS, Hôpital Cochin, Paris, France.
authors.forename: P
authors.initials: P
authors.lastname: Jouannet
authors.forename: J
authors.initials: J
authors.lastname: Auger
mesh_terms: D004777:Environment; D005298:Fertility; D006801:Humans; D008297:Male; D013076:Sperm Count / Q000379:methods