[Sinus disease. Report of 3 cases].
D000328:Adult; D001919:Bradycardia / Q000175:diagnosis; D004562:Electrocardiography; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D013610:Tachycardia / Q000175:diagnosis
Enfermedad del seno. Presentación de tres casos