RT Journal Article SR Electronic T1 Cardiac Surgery ed. by Dwight C. McGoon JF Cleveland Clinic Journal of Medicine JO Cleve Clin J Med FD Cleveland Clinic SP 547 OP 547 VO 56 IS 5 A1 Robert W. Stewart YR 1989 UL http://www.ccjm.org/content/56/5/547.1.abstract AB