title: The frequency and prognostic significance of electrocardiographic abnormalities in clinically normal individuals.
mesh_terms: D001145:Arrhythmias, Cardiac / Q000175:diagnosis*; D001281:Atrial Fibrillation / Q000175:diagnosis; D002037:Bundle-Branch Block / Q000175:diagnosis; D005117:Cardiac Complexes, Premature / Q000175:diagnosis; D004562:Electrocardiography; D006327:Heart Block / Q000175:diagnosis*; D006801:Humans; D011379:Prognosis; D012848:Sinoatrial Block / Q000175:diagnosis; D013610:Tachycardia / Q000175:diagnosis