The anatomic substrate for the sick sinus syndrome in adolescence.
D000273:Adipose Tissue / Q000473:pathology; D000293:Adolescent; D006332:Cardiomegaly / Q000473:pathology; D004562:Electrocardiography; D004594:Electrophysiology; D006329:Heart Conduction System / Q000473:pathology; D006801:Humans; D008297:Male; D009206:Myocardium / Q000473:pathology; D012804:Sick Sinus Syndrome / Q000473:pathology* / Q000503:physiopathology / Q000628:therapy