Blood TransfusionExsanguinationBlood Component TransfusionErythrocyte TransfusionMultiple TraumaTrauma CentersBlood Coagulation DisordersWounds and InjuriesResuscitationInjury Severity ScoreHemorrhageShock, HemorrhagicPlasmaPlatelet TransfusionExchange Transfusion, Whole BloodBlood Transfusion, AutologousBlood Transfusion, IntrauterineFetofetal TransfusionTreatment OutcomeBlood Loss, SurgicalBlood Grouping and CrossmatchingLeukocyte TransfusionBlood BanksBlood DonorsBlood PreservationBlood Group IncompatibilityAnemia, NeonatalAnemiaErythroblastosis, FetalPlateletpheresisHemoglobinsOperative Blood SalvagePostoperative HemorrhageIsoantibodiesTranexamic AcidAntifibrinolytic AgentsBlood SubstitutesBlood SafetyIntraoperative CareFetomaternal TransfusionThrombocytopeniaRetrospective StudiesRh IsoimmunizationAnemia, Sickle CellLeukocyte Reduction ProceduresFetoscopyPlatelet CountHemostaticsErythropoietinHemodilutionPerioperative CareHemostasis, SurgicalHematinicsJehovah's Witnessesbeta-ThalassemiaTime FactorsCardiopulmonary BypassProspective StudiesInfant, NewbornIron OverloadAprotininPhlebotomyRh-Hr Blood-Group SystemPostoperative ComplicationsABO Blood-Group SystemChelation TherapyRisk FactorsPreoperative CareThrombelastographySurgical Procedures, Elective