RT Journal Article SR Electronic T1 Percutaneous transluminal coronary angioplasty; two years’ experience JF Cleveland Clinic Journal of Medicine JO Cleve Clin J Med FD Cleveland Clinic SP 228 OP 230 VO 47 IS 3 A1 Grüntzig, Andreas A1 Turina, Marko YR 1980 UL http://www.ccjm.org/content/47/3/228.abstract AB