title: [Decrease in sperm count of human semen].
authors.forename: M
authors.initials: M
authors.lastname: Omura
mesh_terms: D000367:Age Factors; D005060:Europe; D006801:Humans; D008297:Male; D015201:Meta-Analysis as Topic; D012044:Regression Analysis; D012746:Sexual Abstinence; D013076:Sperm Count; D013997:Time Factors; D014481:United States