Blood DonorsBlood TransfusionSeroepidemiologic StudiesBlood Transfusion, AutologousErythrocyte TransfusionHepatitis BPrevalencePlatelet TransfusionExchange Transfusion, Whole BloodBlood Component TransfusionBlood Loss, SurgicalBlood Transfusion, IntrauterineBlood BanksBlood Grouping and CrossmatchingVoluntary ProgramsOperative Blood SalvageFetofetal TransfusionVolitionAnemiaPostoperative HemorrhageTranexamic AcidHemoglobinsAntifibrinolytic AgentsIntraoperative CareJehovah's WitnessesBlood PreservationBlood Group IncompatibilityRetrospective StudiesTreatment OutcomeBlood SafetyAnemia, NeonatalLeukocyte TransfusionHemodilutionPerioperative CareTime FactorsElectromyographyBlood SubstitutesPlateletpheresisbeta-ThalassemiaErythroblastosis, FetalIsoantibodiesPostoperative ComplicationsHemostaticsErythropoietinLeukocyte Reduction ProceduresRisk FactorsAnemia, Sickle CellProspective StudiesHemorrhageHemostasis, SurgicalIsometric ContractionPreoperative CareRed CrossFetomaternal TransfusionSurgical Procedures, ElectiveBlood-Borne PathogensCardiopulmonary BypassHepatitis CPostoperative CareRh IsoimmunizationHematinicsVoluntary Health AgenciesArthroplasty, Replacement, KneeGastrointestinal HemorrhageAprotininMuscle ContractionMuscle, SkeletalTorqueLength of StayInfant, NewbornIron OverloadChelation TherapyCardiac Surgical ProceduresPostpartum HemorrhageMuscle FatiguePlasmaPlatelet CountThalassemiaThrombocytopeniaHepatitis C AntibodiesBlood Coagulation DisordersSurgical Procedures, OperativePhysical Conditioning, AnimalPregnancyMaximal Voluntary VentilationPhlebotomyChi-Square DistributionMovementHematocritEuthanasia, Active, VoluntaryHepatectomyReticulocyte CountAminocaproic AcidHepatitis, Viral, HumanArthroplasty, Replacement, HipCreutzfeldt-Jakob SyndromePeptic Ulcer HemorrhageRisk AssessmentFollow-Up StudiesTattooing