RT Journal Article SR Electronic T1 Primary percutaneous coronary intervention in octogenarians: navigate with caution JF Heart JO Heart FD BMJ Publishing Group Ltd and British Cardiovascular Society SP 813 OP 814 DO 10.1136/hrt.2009.191916 VO 96 IS 11 A1 George D Dangas A1 Harsimran S Singh YR 2010 UL http://heart.bmj.com/content/96/11/813.abstract AB