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[2]
BLOODWELL RD, 1969, PROSTHETIC HEART VAL, pCH26
[5]
BURDETTE WJ, 1962, ARCH SURG-CHICAGO, V85, P20
[7]
COPELAND J, 1968, CIRCULATION S2, V37, P188
[10]
KAY EB, 1967, JAMA, V168, P1667