RT Journal Article SR Electronic T1 Direct myocardial revascularization — 1976 JF Cleveland Clinic Journal of Medicine JO Cleve Clin J Med FD Cleveland Clinic SP 97 OP 108 VO 43 IS 3 A1 Sheldon, William C. A1 Loop, Floyd D. YR 1976 UL http://www.ccjm.org/content/43/3/97.abstract AB