Familial sinus node disease.
D000293:Adolescent; D000328:Adult; D000368:Aged; D001146:Arrhythmia, Sinus / Q000175:diagnosis / Q000235:genetics*; D003638:Deafness / Q000151:congenital; D004562:Electrocardiography; D005260:Female; D006801:Humans; D008297:Male; D012849:Sinoatrial Node; D013575:Syncope / Q000209:etiology