[1] Univ Hosp, Med Clin, Brescia, Italy
[2] Univ Hosp, Dept Med, Brescia, Italy
[3] Univ Milano Bicocca, St Gerardo Hosp, Med Clin, Milan, Italy
[4] Univ Milano Bicocca, St Gerardo Hosp, Dept Med, Milan, Italy
[5] Univ New S Wales, St Vincents Clin, Darlinghurst, NSW, Australia
[6] Cornell Univ, Weill Med Coll, Ithaca, NY USA
[7] Hop Hotel Dieu, Ctr Diagnost, F-75181 Paris, France
[8] Upstate Med Univ, Dept Med, Syracuse, NY USA
[9] Shanghai Jiao Tong Univ, Sch Med, Ruijin Hosp, Ctr Epidemiol Studies & Clin Trials, Shanghai 200030, Peoples R China
[10] Univ Cambridge, Addenbrookes Hosp, Cambridge CB2 2QQ, England
[11] Univ Leicester, Sch Med, Dept Cardiovasc Sci, Leicester, Leics, England
[12] Hippokrateion Hosp, Athens Med Sch, Dept Cardiol 1, Athens, Greece