title: [Preliminary experiences with the Vario pacemaker EM 169].
mesh_terms: D000368:Aged; D004562:Electrocardiography; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010138:Pacemaker, Artificial / Q000295:instrumentation*
vernacular_title: Vorläufige Erfahrungen mit dem Variopacemaker EM 169.