[1] Univ Hosp Gasthuisberg, Leuven, Belgium
[2] Univ Padua, Dept Cardiol, Padua, Italy
[3] Univ Padua, Dept Pathol, Padua, Italy
[4] Italian Natl Olymp Comm, Natl Inst Sports Med, Rome, Italy
[5] Hosp Munchen Bogenhausen, Dept Cardiol, Munich, Germany
[6] Hosp Munchen Bogenhausen, Dept Pneumol, Munich, Germany
[7] Radboud Univ Nijmegen, Med Ctr, Ctr Heart, NL-6525 ED Nijmegen, Netherlands
[8] Radboud Univ Nijmegen, Dept Sports Cardiol & Cardiac Rehabil, NL-6525 ED Nijmegen, Netherlands
[9] Maxima Med Ctr, Dept Cardiol, Veldhoven, Netherlands
[10] Civil Hosp, Dept Cardiol, Conegliano, Italy
[11] Haukeland Hosp, Dept Heart Dis, N-5021 Bergen, Norway