Blood DonorsBlood TransfusionErythrocyte TransfusionPlatelet TransfusionExchange Transfusion, Whole BloodBlood Component TransfusionBlood Transfusion, AutologousTissue DonorsBlood BanksBlood Transfusion, IntrauterineFetofetal TransfusionBlood SafetyLiving DonorsSeroepidemiologic StudiesBlood Grouping and CrossmatchingDonor SelectionLeukocyte TransfusionBlood Loss, SurgicalHepatitis CBlood PreservationHepatitis C AntibodiesHepatitis BHepatitis, Viral, HumanHepatitis B Surface AntigensHemoglobinsBlood Group IncompatibilityTorque teno virusEnzyme-Linked Immunosorbent AssayPlateletpheresisIsoantibodiesHTLV-II InfectionsAnemiaDNA Virus InfectionsBlood-Borne PathogensHepatitis AntibodiesAnemia, NeonatalErythroblastosis, FetalRetrospective StudiesPrevalenceHepatitis B AntibodiesRed CrossFlaviviridaeOperative Blood SalvagePostoperative HemorrhageHepacivirusPolymerase Chain ReactionHepatitis B Core AntigensABO Blood-Group SystemRh-Hr Blood-Group SystemHTLV-I InfectionsTime FactorsHTLV-I AntibodiesBrazilKidd Blood-Group SystemTreatment OutcomeAntibodies, ViralRisk FactorsPlasmaHTLV-II AntibodiesFlaviviridae InfectionsImmunoglobulin GHepatitis B virusTranexamic AcidBlood SubstitutesAntifibrinolytic AgentsHuman T-lymphotropic virus 2GenotypeIntraoperative CareSyphilisFetomaternal TransfusionImmunoglobulin MBlood Group AntigensTransplantation, HomologousThrombocytopeniaDNA, ViralProspective StudiesHepatitis B AntigensAntigens, Human PlateletSensitivity and SpecificityRh IsoimmunizationFetoscopyGraft SurvivalAnemia, Sickle CellLeukocyte Reduction ProceduresRadioimmunoprecipitation AssayHistocompatibility TestingPlatelet CountIranHemagglutination TestsHemorrhageHemostaticsRNA, ViralHIV InfectionsHLA AntigensInfant, NewbornKidney TransplantationErythropoietinPhlebotomyItalyLiver Transplantation