[1] Univ Belgrade, Clin Hosp Ctr Zemun, Dept Cardiol, Fac Med, Vukova 9, Belgrade 11080, Serbia
[2] Univ Edinburgh, BHF Ctr Cardiovasc Sci, Chancellors Bldg, Edinburgh EH16 4SB, Midlothian, Scotland
[3] Leiden Univ, Med Ctr, Dept Cardiol, Albinusdreef 2, NL-2300 RC Leiden, Netherlands
[4] Med Univ Vienna, AKH Gen Hosp Vienna, Univ Clin Internal Med 2, Dept Cardiol, Waehringer Guertel 18-20, A-1090 Vienna, Austria
[5] St Olavs Hosp, Clin Cardiol, Postboks 3250 Torgarden, N-7006 Trondheim, Norway
[6] Norwegian Univ Sci & Technol NTNU, Dept Circulat & Med Imaging, Postboks 8905, N-7491 Trondheim, Norway
[7] Univ Hosp Zurich, Univ Heart Ctr, Dept Cardiol, Ramistr 100, CH-8091 Zurich, Switzerland
[8] Humboldt Univ, Charite Med Fac, ECRC, D-13125 Berlin, Germany
[9] DZHK, Partner Site, D-13125 Berlin, Germany
[10] Helios Clin Berlin Buch, Cardiol, D-13125 Berlin, Germany
[11] Univ Barcelona, Hosp Clin, Cardiovasc Inst, Villarroel 170, E-08036 Barcelona, Spain
[12] Inst Invest Biomed August Pi & Sunyer IDIBAPS, Villarroel 170, Barcelona 08036, Spain
[13] Inst Salud Carlos III, CIBERCV, Sinesio Delgado 4, Madrid 28029, Spain
[14] Oslo Univ Hosp, Dept Cardiol, Postboks 4950 Nydalen, N-0424 Oslo, Norway
[15] Univ Oslo, Inst Clin Med, Postboks 1171, N-0318 Oslo, Norway