[1] Univ Oslo, Oslo Univ Hosp, Dept Cardiol, Oslo, Norway
[2] Univ Milan, Osped San Paolo, Dipartimento Sci Salute, Milan, Italy
[3] Univ Paris 06, INSERM, Grp Hosp Pitie Salpetriere, AP HP,U937,Inst Cardiol, F-75013 Paris, France
[4] Catholic Univ Hosp, Dept Cardiovasc Sci, Rome, Italy
[5] Univ Birmingham, Ctr Cardiovasc Sci, City Hosp, Birmingham, W Midlands, England
[6] Onze Lieve Vrouw Hosp, Dept Cardiol, Amsterdam, Netherlands
[7] Wilhelminenhospital, Dept Med 3, Vienna, Austria
[8] Aarhus Univ Hosp, Dept Cardiol, Skejby, Denmark
[9] Ctr Hosp Leiria Pombal, Serv Cardiol, Leiria, Portugal
[10] Arhus Univ Hosp, Dept Cardiol, Aarhus, Denmark
[11] Isar Kliniken, Dept Cardiol, Isar Heart Ctr, Munich, Germany
[12] IRCCS San Raffaele Pisana, Dept Med Sci, I-235 Rome, Italy
[13] CHU, Toulouse, France
[14] Univ Toulouse 3, Fac Med Toulouse, Inst Malad Metabol & Cardiovasc U104, INSERM, F-31062 Toulouse, France
[15] Rigshosp, Ctr Heart, Copenhagen Univ Hosp, DK-2100 Copenhagen, Denmark
[16] Aalborg Univ, Fac Med, Aalborg, Denmark
[17] Univ Sheffield, Dept Cardiovasc Sci, Sheffield, S Yorkshire, England