[Value of external hysterography for the diagnosis of threatened premature labor].
D000033:Abortion, Threatened / Q000175:diagnosis*; D005260:Female; D006801:Humans; D011247:Pregnancy; D014599:Uterus / Q000502:physiology*
Znachenie naruzhnoĭ gisterografii dlia diagnostiki ugrozhaiushchikh prezhdevremennykh rodov.