[1] Paracelsus Med Univ, Dept Internal Med 2, Salzburg, Austria
[2] Publ Hosp Klagenfurt Woerthersee, Dept Cardiol, Klagenfurt Am Woertherse, Austria
[3] Bros St John God Eisenstadt, Dept Internal Med, Eisenstadt, Austria
[4] Klinikum Wels, Dept Cardiol & Intens Care, Wels, Austria
[5] Karl Landsteiner Univ Hlth Sci, Univ Hosp St Polten, Dept Internal Med Cardiol 3, Krems, Austria
[6] Med Univ Vienna, Div Cardiol, Dept Internal Med 2, Waehringer Guertel 18-20, A-1090 Vienna, Austria
[7] Ordensklinikum Linz Elisabethinen, Dept Cardiol, Linz, Austria
[8] Paracelsus Med Univ, Gen Hosp Oberndorf, Dept Internal Med, Teaching Hosp, Salzburg, Austria
[9] Teaching Hosp Feldkirch, Dept Internal Med & Cardiol 1, Feldkirch, Austria