Erythrocyte TransfusionBlood TransfusionAnemia, NeonatalBlood Component TransfusionAnemiaBlood Transfusion, AutologousPlatelet TransfusionErythropoietinHemoglobinsHematinicsBlood PreservationBlood Loss, SurgicalPostoperative HemorrhageHematocritExchange Transfusion, Whole BloodTreatment OutcomeIron OverloadMyelodysplastic SyndromesRetrospective StudiesBlood Grouping and CrossmatchingAnemia, Sickle CellCardiopulmonary BypassCritical IllnessInfant, Premature, DiseasesBlood Transfusion, IntrauterineInfant, NewbornInfant, PrematureBlood Group IncompatibilityBlood CellsCardiac Surgical ProceduresProspective StudiesTime FactorsLeukocyte TransfusionIntensive Care UnitsPostoperative ComplicationsFetofetal TransfusionRecombinant ProteinsRisk FactorsErythrocytesIronRisk AssessmentIsoantibodiesSurvival RatePhlebotomyCohort StudiesIntraoperative CareFollow-Up StudiesPlatelet CountLogistic ModelsThrombocytopeniaBlood BanksHemorrhageBlood DonorsIron Chelating AgentsBlood Cell CountErythroblastosis, FetalPlateletpheresisTransplantation, HomologousGranulocyte Colony-Stimulating FactorLength of StayOperative Blood SalvageErythrocyte CountHematopoietic Stem Cell TransplantationBlood SubstitutesHospital MortalityNeutropeniaBone Marrow Transplantation