title: Declining sperm count. Results of Scottish study may be due to confounding with age.
authors.forename: G
authors.initials: G
authors.lastname: Raab
mesh_terms: D000328:Adult; D000367:Age Factors; D015986:Confounding Factors, Epidemiologic; D006801:Humans; D008297:Male; D008875:Middle Aged; D012606:Scotland; D013076:Sperm Count