Idiopathic ventricular arrhythmias originating from the aortic root prevalence, electrocardiographic and electrophysiologic characteristics, and results of radiofrequency catheter ablation. - Yamada T; McElderry HT; Doppalapudi H; Murakami Y; Yoshida Y; Yoshida N; Okada T; Tsuboi N; Inden Y; Murohara T; Epstein AE; Plumb VJ; et al. (Journal of the American College of Cardiology (JACC), 2008)