title: Letter by Madias regarding article, "Role of microvolt T-wave alternans in assessment of arrhythmia vulnerability among patients with heart failure and systolic dysfunction: primary results from the T-wave alternans sudden cardiac death in heart failure trial substudy".
authors.forename: John E
authors.initials: JE
authors.lastname: Madias
mesh_terms: D001145:Arrhythmias, Cardiac / Q000175:diagnosis* / Q000503:physiopathology; D016757:Death, Sudden, Cardiac; D004198:Disease Susceptibility; D004562:Electrocardiography / Q000379:methods / Q000592:standards*; D006333:Heart Failure / Q000175:diagnosis* / Q000503:physiopathology; D054143:Heart Failure, Systolic / Q000175:diagnosis / Q000503:physiopathology; D006801:Humans; D015337:Multicenter Studies as Topic; D016032:Randomized Controlled Trials as Topic; D018570:Risk Assessment