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Fig 2. Freedom from conduit reoperation according to conduit used: aortic homograft (squares); pulmonary homograft (diamonds); Contegra (triangles); and Shelhigh (crosses). The numbers for the patients with the Shelhigh conduit are on the curve; the numbers represent patients at risk (the 95% confidence limits are in parentheses). (AH = aortic homograft; C = Contegra conduit; PH = pulmonary homograft.)
