title: Case 7: obstetrical. Acardiac twinning.
authors.forename: J M
authors.initials: JM
authors.lastname: Mastrobattista
authors.forename: J B
authors.initials: JB
authors.lastname: Silva
mesh_terms: D000015:Abnormalities, Multiple / Q000000981:diagnostic imaging; D003937:Diagnosis, Differential; D004200:Diseases in Twins; D005260:Female; D006330:Heart Defects, Congenital / Q000000981:diagnostic imaging*; D006801:Humans; D011247:Pregnancy; D014430:Twins, Monozygotic; D016216:Ultrasonography, Prenatal