1995k-542 2006n-985 administration aids aids(disease) banquesdesang biologicalsciences blood bloodbanks bloodtransfusion communicablediseases diseases étatsunisd'amérique fitness health healthpolicy hiv hivinfections infectionsàvih jurisprudence lawandlegislation legislation medical medicalpolicy methods méthodes organisationetadministration organization politiquesanitaire publichealth riskmanagement sang transfusion transfusionsanguine transmission unitedstates wb356b78732007