title: Cardiac pacemakers.
authors.affiliation: Harvard Medical School, Boston, Massachusetts.
authors.forename: J W
authors.initials: JW
authors.lastname: Harthorne
mesh_terms: D002309:Cardiology / Q000193:education; D004554:Electric Countershock; D006329:Heart Conduction System / Q000033:anatomy & histology*; D006801:Humans; D010138:Pacemaker, Artificial; D013610:Tachycardia / Q000628:therapy*