Blood Transfusion, AutologousBlood TransfusionFetal BloodUmbilical CordCord Blood Stem Cell TransplantationTransplantation, AutologousBlood BanksErythrocyte TransfusionUmbilical VeinsUmbilical ArteriesPlatelet TransfusionInfant, NewbornAntigens, CD34PregnancyHematopoietic Stem Cell TransplantationHematopoietic Stem CellsExchange Transfusion, Whole BloodBlood DonorsSpinal CordBlood Loss, SurgicalBlood PreservationBlood Component Transfusion