[1] San Luca Hosp, Vallo Della Lucania, Sa, Italy
[2] Fdn IRCCS Policlin San Matteo, Pavia, Italy
[3] Div Cardiol ASS4, San Daniele Del Friuli, Pn, Italy
[4] Hosp Santa Maria, Terni, Italy
[5] Hosp Santa Maria, Sorrento, Na, Italy
[6] Osped Guglielmo Da Saliceto, Piacenza, Italy
[7] CNR, Inst Fisiol Clin, Lecce, Italy
[8] Univ Ferrara, Dept Clin Exp Med, I-44100 Ferrara, Italy