Wesley, Allan J An Acardiac twin with a documented heart beat at 6 + 5 weeks and TRAP diagnosed at 8 + 5 weeks-insights into possible pathophysiology. [electronic resource] - Prenatal diagnosis Apr 2011 - 413-4 p. digital Publication Type: Case Reports; Letter ISSN: 1097-0223 Standard No.: 10.1002/pd.2710 doi Subjects--Topical Terms: Abnormalities, Multiple--diagnostic imagingAdultDiseases in Twins--diagnostic imagingFemaleFetofetal Transfusion--complicationsGestational AgeHeart Defects, Congenital--complicationsHeart Rate, Fetal--physiologyHumansMiddle Cerebral Artery--abnormalitiesPolyhydramnios--diagnostic imagingPregnancyPregnancy, Multiple--physiologyTwinsTwins, MonozygoticUltrasonography