title: Twenty years of cardiac pacing in Sweden.
mesh_terms: D002304:Cardiac Pacing, Artificial / Q000266:history*; D004567:Electrodes, Implanted; D049673:History, 20th Century; D006801:Humans; D008839:Microelectrodes; D010138:Pacemaker, Artificial / Q000295:instrumentation; D013548:Sweden