The etiology of sino-atrial disorder (Sick Sinus Syndrome).
D001919:Bradycardia / Q000209:etiology; D006325:Heart Atria / Q000473:pathology; D006327:Heart Block / Q000209:etiology*; D006801:Humans; D009203:Myocardial Infarction / Q000150:complications; D012848:Sinoatrial Block / Q000209:etiology* / Q000503:physiopathology; D012849:Sinoatrial Node / Q000503:physiopathology; D013610:Tachycardia / Q000209:etiology