Implantable defibrillator event rates in patients with idiopathic dilated cardiomyopathy, asymptomatic ventricular tachycardia on Holter and a left ventricular ejection fraction below 30 %. - Grimm,W.; Hoffmann,J.; Müller,H.H.; Maisch,B. (J Am Coll Cardiol, 2002)