[1] Univ Genoa, Dept Internal Med, Clin Internal Med 1, I-16126 Genoa, Italy
[2] IRCCS AUO San Martino IST, Genoa, Italy
[3] Univ Geneva, Fdn Med Res, Div Cardiol, Geneva, Switzerland
[4] Azienda Osped Univ Arcispedale S Anna, Dept Neurosci & Rehabil, Neuroradiol Unit, Ferrara, Italy