Influence of estriol on the onset of labor.
D000818:Animals; D004357:Drug Synergism; D004958:Estradiol / Q000494:pharmacology; D004964:Estriol / Q000494:pharmacology*; D005260:Female; D006801:Humans; D007751:Labor, Induced; D011247:Pregnancy; D011374:Progesterone / Q000494:pharmacology; D051381:Rats; D014599:Uterus / Q000187:drug effects*
D011374:Progesterone; D004958:Estradiol; D004964:Estriol