title: First trimester diagnosis of acardiac twins.
authors.affiliation: Center for Human Reproduction, Chicago, Illinois, USA.
authors.forename: C B
authors.initials: CB
authors.lastname: Coulam
mesh_terms: D009008:Abnormalities, Severe Teratoid / Q000000981:diagnostic imaging; D000328:Adult; D004200:Diseases in Twins; D005260:Female; D005313:Fetal Death; D005315:Fetal Diseases / Q000000981:diagnostic imaging; D005318:Fetal Heart / Q000000981:diagnostic imaging*; D006330:Heart Defects, Congenital / Q000000981:diagnostic imaging*; D006801:Humans; D011247:Pregnancy; D011261:Pregnancy Trimester, First; D016216:Ultrasonography, Prenatal