Drupal-Bibcite0<style face="normal" font="default" size="100%">30 Acute unprotected left mainstem occlusion emergency percutaneous coronary intervention: analysis of the british cardiovascular intervention society database.</style><style face="normal" font="default" size="100%">30 Acute unprotected left mainstem occlusion emergency percutaneous coronary intervention: analysis of the british cardiovascular intervention society database.</style>