Blood TransfusionBlood Transfusion, AutologousErythrocyte TransfusionTransplantation, AutologousPlatelet TransfusionExchange Transfusion, Whole BloodBlood Component TransfusionBlood Loss, SurgicalBlood Transfusion, IntrauterineBlood BanksBlood DonorsBlood Grouping and CrossmatchingOperative Blood SalvageFetofetal TransfusionAnemiaHemoglobinsPostoperative HemorrhageTranexamic AcidTreatment OutcomeAntifibrinolytic AgentsIntraoperative CareJehovah's WitnessesBlood PreservationRetrospective StudiesBlood Group IncompatibilityHemodilutionLeukocyte TransfusionTime FactorsPlateletpheresisBlood SafetyAnemia, NeonatalBlood SubstitutesPerioperative CareProspective StudiesHematopoietic Stem Cell TransplantationPostoperative Complicationsbeta-ThalassemiaIsoantibodiesPlasmaErythropoietinHemostaticsBone Marrow TransplantationErythroblastosis, FetalRisk FactorsAnemia, Sickle CellHemorrhageLeukocyte Reduction ProceduresHemostasis, SurgicalPreoperative CarePlatelet CountRed CrossCardiopulmonary BypassSurgical Procedures, ElectiveHematocritPostoperative CareCombined Modality TherapyTransplantation, HomologousFetomaternal TransfusionBlood-Borne PathogensBlood Specimen CollectionHepatitis CErythrocytesArthroplasty, Replacement, KneeAprotininInfant, NewbornCardiac Surgical ProceduresRh IsoimmunizationThrombocytopeniaHematinicsLength of StayGastrointestinal HemorrhageFollow-Up StudiesBloodIron OverloadChelation Therapy