Blood Component RemovalBlood Component TransfusionBlood BanksBlood TransfusionPlatelet TransfusionBlood DonorsErythrocyte TransfusionLeukocyte Reduction ProceduresPlasmaPiezosurgerySubgingival CurettageBlood PreservationBlood Grouping and CrossmatchingBlood CellsLasers, Solid-StateCytapheresisBlood Group IncompatibilityBloodBlood Buffy CoatDuty to WarnMandatory ReportingSmear LayerWhite Muscle DiseasePlateletpheresisUnited States Food and Drug AdministrationBlood Cell CountBlood Coagulation DisordersHematocritIsoantibodiesErythrocytesRh-Hr Blood-Group SystemTooth RootBlood PlateletsAcute Lung InjuryAutomatic Data ProcessingHemoglobinsDisease Transmission, InfectiousLeukocytesWounds and InjuriesRetrospective StudiesLeukocyte Count