RT Journal Article SR Electronic T1 Coronary arteriography in asymptomatic persons JF Cleveland Clinic Journal of Medicine JO Cleve Clin J Med FD Cleveland Clinic SP 185 OP 186 VO 47 IS 3 A1 Froelicher, Victor F. YR 1980 UL http://www.ccjm.org/content/47/3/185.abstract AB