Sutton, M G Relationship between placental blood flow and combined ventricular output with gestational age in normal human fetus. [electronic resource] - Cardiovascular research Jul 1991 - 603-8 p. digital Publication Type: Journal Article ISSN: 0008-6363 Standard No.: 10.1093/cvr/25.7.603 doi Subjects--Topical Terms: Cardiac Output--physiologyEchocardiographyFetal Heart--diagnostic imagingGestational AgeHumansPlacenta--blood supplyRegional Blood Flow--physiologyUmbilical Veins--physiology