Tiisala, R Heart volume variations during first 24 hours of life of infants with early and late clamped umbilical cord. [electronic resource] - Annales paediatriae Fenniae 1966 - 151-3 p. digital Publication Type: Clinical Trial; Controlled Clinical Trial; Journal Article ISSN: 0570-1732 Subjects--Topical Terms: Birth WeightBlood CirculationBlood VolumeDelivery, ObstetricFemaleHeart--diagnostic imagingHumansInfant, NewbornMaternal-Fetal ExchangePregnancyRadiographyUmbilical Cord--physiology