title: Declining sperm quality in men of childless couples.
authors.affiliation: Clinic of Reproductive Medicine and Gynecologic Endocrinology, Otto-von-Guericke-University, Magdeburg, Germany.
authors.forename: D
authors.initials: D
authors.lastname: Glöckner
authors.forename: K
authors.initials: K
authors.lastname: Gaevert
authors.forename: J
authors.initials: J
authors.lastname: Kleinstein
mesh_terms: D000328:Adult; D005260:Female; D006801:Humans; D007248:Infertility, Male / Q000503:physiopathology*; D008297:Male; D013081:Sperm Motility; D013094:Spermatozoa / Q000502:physiology*