[1] Univ Padua, Sch Med, Dept Cardiol, I-35121 Padua, Italy
[2] Univ Padua, Dept Pathol, I-35121 Padua, Italy
[3] Hop Jean Rostand, Dept Cardiol, Paris, France
[4] Univ Arizona, Cardiol Sect, Tucson, AZ USA
[5] St George Hosp, Sch Med, Dept Cardiol Sci, London, England
[6] Univ Munster, Dept Cardiol & Angiol, T Med Klin & Poliklin, D-4400 Munster, Germany