title: Acardiac-acephalus twins: a report of 2 cases and review of literature.
mesh_terms: D000015:Abnormalities, Multiple / Q000175:diagnosis*; D000328:Adult; D004200:Diseases in Twins; D005260:Female; D006330:Heart Defects, Congenital / Q000175:diagnosis*; D006801:Humans; D007231:Infant, Newborn; D011247:Pregnancy; D011379:Prognosis