[The value of bidimensional echography for diagnosis and prognosis in threatened abortion].
D000033:Abortion, Threatened / Q000175:diagnosis; D005260:Female; D006801:Humans; D011247:Pregnancy; D011379:Prognosis; D013997:Time Factors; D014465:Ultrasonics / Q000295:instrumentation; D014463:Ultrasonography
Valor diagnostico y pronostico de la ecografia bidimensional en la amenaza de aborto