Paone, G The paradox of on-bypass transfusion thresholds in blood conservation. [electronic resource] - Circulation Nov 1997 - II-205-8; discussion II-209 p. digital Publication Type: Journal Article ISSN: 0009-7322 Subjects--Topical Terms: AgedBlood TransfusionCardiopulmonary BypassFemaleHematocritHumansMaleMiddle AgedProspective Studies