title: Male factors contributing to the seasonality of human reproduction.
authors.affiliation: Epidemiology Branch, National Institute of Child Health and Human Development, Bethesda, Maryland 20892.
authors.forename: R J
authors.initials: RJ
authors.lastname: Levine
mesh_terms: D000818:Animals; D005260:Female; D005298:Fertility; D006801:Humans; D008297:Male; D015201:Meta-Analysis as Topic; D010507:Periodicity; D011247:Pregnancy / Q000706:statistics & numerical data; D012098:Reproduction; D012621:Seasons; D012661:Semen; D013076:Sperm Count; D013091:Spermatogenesis