title: Pacemaker therapy in symptomatic sinoatrial node disease (sick sinus syndrome).
mesh_terms: D000328:Adult; D000368:Aged; D001146:Arrhythmia, Sinus / Q000628:therapy*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010138:Pacemaker, Artificial