title: [Ultrasonography in twin pregnancies].
authors: Service de gynecologie-obstetrique, hopital Princesse Grace, 98000 Monaco dr.barnard.benoit@wanadoo.fr
authors: Bernard
authors: B
authors: Benoit
authors: Jean-Marc
authors: JM
authors: Levaillant
mesh_terms: D002823:Chorion / Q000000981:diagnostic imaging; D005260:Female; D006801:Humans; D011247:Pregnancy; D011261:Pregnancy Trimester, First; D011262:Pregnancy Trimester, Second; D011272:Pregnancy, Multiple; D014427:Twins; D016216:Ultrasonography, Prenatal