[1] Med Univ Graz, Dept Cardiol, Auenbruggerpl 15, A-8036 Graz, Austria
[2] Hosp Santa Creu & Sant Pau, IIB St Pau, Res Inst, Cardiovasc Program,ICCC, Barcelona, Spain
[3] Inst Salud Carlos III, Ctr Invest Biomed Red Cardiovasc CIBERCV, Madrid, Spain