[1] AO SM Misericordia, UO Cardiol, Udine, Italy
[2] S Corona Hosp, Dept Cardiol, Pietra Ligure, Italy
[3] Osped Niguarda Ca Granda, Dept Cardiol, Milan, Italy
[4] ANMCO, Res Ctr, Florence, Italy
[5] San Donato Hosp, Dept Cardiol, Arezzo, Italy
[6] Gen Hosp, Dept Cardiol, Legnaro, Italy
[7] San Giovanni Hosp, Dept Cardiol, Rome, Italy