[1] Univ Cattolica Sacro Cuore, Inst Psychiat, Dept Neurosci, I-00168 Rome, Italy
[2] Policlin Casilino, Div Cardiol, I-00168 Rome, Italy
[3] Univ Cattolica Sacro Cuore, Inst Cardiol, I-00168 Rome, Italy
[4] Virginia Commonwealth Univ Med Coll Virginia, VCU Pauley Heart Ctr, Richmond, VA 23298 USA
[5] Univ Modena & Reggio Emilia, Div Cardiol, I-41121 Modena, Italy