title: Significance of prolonged electrocardiographic pauses in sinoatrial disease: sick sinus syndrome.
mesh_terms: D000328:Adult; D000368:Aged; D004562:Electrocardiography; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008875:Middle Aged; D010138:Pacemaker, Artificial; D011379:Prognosis; D012804:Sick Sinus Syndrome / Q000175:diagnosis* / Q000401:mortality / Q000628:therapy; D013997:Time Factors