Autonomic nervous function abnormalities in patients with Brugada syndrome - Kostopoulou, Anna; Theodorakis, George N; Koutelou, Maria; Livanis, Efthimios G; Theodorakos, Athanassios; Maounis, Themos; Kremastinos, Dimitribs Th; Cokkinos, Dennis V (JOURNAL OF THE AMERICAN COLLEGE OF CARDIOLOGY, 2007)