RT Journal Article SR Electronic T1 Thrombolysis: too old and too young JF Heart JO Heart FD BMJ Publishing Group Ltd and British Cardiovascular Society SP 312 OP 313 DO 10.1136/heart.87.4.312 VO 87 IS 4 A1 S G Ball YR 2002 UL http://heart.bmj.com/content/87/4/312.abstract AB