title: Teenage fertility in developed nations: 1971-1980.
mesh_terms: D000293:Adolescent; D000328:Adult; D001315:Australia; D002170:Canada; D003431:Cross-Cultural Comparison; D005006:Ethnicity; D005060:Europe; D005260:Female; D005298:Fertility; D006801:Humans; D007557:Israel; D011247:Pregnancy; D014481:United States