title: [Has sperm quality decreased during the last 50 years?].
authors: INSERM U292 Hôpital de Bicêtre, Le Kremlin-Becêtre.
authors: A
authors: A
authors: Spira
mesh_terms: D000328:Adult; D004777:Environment; D005260:Female; D006801:Humans; D008297:Male; D015201:Meta-Analysis as Topic; D008875:Middle Aged; D011247:Pregnancy; D013076:Sperm Count; D013094:Spermatozoa
vernacular_title: La qualité du sperme a-t-elle baissé au cours des cinquante dernières années?