The timing of first births: a review of effects.
D000293:Adolescent; D000328:Adult; D004739:England; D005193:Family Planning Services; D005260:Female; D006801:Humans; D007226:Infant Mortality; D008393:Marriage; D008423:Maternal Age; D008428:Maternal Mortality; D011155:Population Control; D011247:Pregnancy; D012959:Socioeconomic Factors; D013997:Time Factors; D014852:Wales