title: Relative contribution of male and female age to the frequency of marital intercourse.
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000375:Aging; D003075:Coitus; D005260:Female; D006801:Humans; D008297:Male; D008393:Marriage; D012737:Sex Factors; D014481:United States