RT Journal Article SR Electronic T1 Combined valve replacement or valvulotomy and bypass graft surgery JF Cleveland Clinic Journal of Medicine JO Cleve Clin J Med FD Cleveland Clinic SP 123 OP 124 VO 45 IS 1 A1 Grondin, Pierre A1 Donzeau-Gouge, P. A1 Bical, O. A1 Kretz, Jean Georges YR 1978 UL http://www.ccjm.org/content/45/1/123.abstract AB