title: Declining sperm count. Data from two groups should not have been combined in analysis.
authors.forename: A J
authors.initials: AJ
authors.lastname: Eccersley
mesh_terms: D000328:Adult; D000367:Age Factors; D006801:Humans; D008297:Male; D008875:Middle Aged; D012680:Sensitivity and Specificity; D013076:Sperm Count