[Electrocardiographic observations of the first clinical experiences with electrical pacemaker with permanent intramyocardial electrode].
D002309:Cardiology / Q000600:supply & distribution*; D004562:Electrocardiography; D004864:Equipment and Supplies; D006327:Heart Block / Q000628:therapy*; D010138:Pacemaker, Artificial
CARDIOLOGY/equipment and supplies; HEART BLOCK/therapy