RT Journal Article SR Electronic T1 Pacemaker lead complications: when is extraction appropriate and what can we learn from published data? JF Heart JO Heart FD BMJ Publishing Group Ltd and British Cardiovascular Society SP 254 OP 259 DO 10.1136/heart.85.3.254 VO 85 IS 3 A1 F A Bracke A1 A Meijer A1 L M van Gelder YR 2001 UL http://heart.bmj.com/content/85/3/254.abstract AB