RT Journal Article SR Electronic T1 Preoperative and postoperative stress evaluation in the assessment of coronary artery bypass graft surgery JF Cleveland Clinic Journal of Medicine JO Cleve Clin J Med FD Cleveland Clinic SP 121 OP 122 VO 45 IS 1 A1 Amsterdam, Ezra A. A1 Mason, Dean T. YR 1978 UL http://www.ccjm.org/content/45/1/121.abstract AB