RT Journal Article SR Electronic T1 The Differential Diagnosis of Coronary Artery Disease JF Cleveland Clinic Journal of Medicine JO Cleve Clin J Med FD Cleveland Clinic SP 22 OP 31 VO 2 IS 4 A1 Ernstene, A. Carlton YR 1935 UL http://www.ccjm.org/content/2/4/22.abstract AB