[Significance of echography under the threat of abortion in the first trimester of pregnancy].
D000022:Abortion, Spontaneous / Q000175:diagnosis*; D005260:Female; D006801:Humans; D011247:Pregnancy; D011261:Pregnancy Trimester, First; D011272:Pregnancy, Multiple; D014463:Ultrasonography
Intérêt de l'écographie dans les menaces d'avortement du premier trimestre de la grossesse.