Obstetric disasters. 1. Spontaneous abortion; the role of hormones.
D000026:Abortion, Habitual / Q000209:etiology*; D004967:Estrogens / Q000494:pharmacology*; D005260:Female; D006801:Humans; D011247:Pregnancy; D011374:Progesterone / Q000494:pharmacology*
D004967:Estrogens; D011374:Progesterone