RT Journal Article SR Electronic T1 Primary angioplasty and stenting of left main coronary occlusion JF Heart JO Heart FD BMJ Publishing Group Ltd and British Cardiovascular Society SP 528 OP 529 DO 10.1136/hrt.79.5.528 VO 79 IS 5 A1 A P BANNING YR 1998 UL http://heart.bmj.com/content/79/5/528.abstract AB