[1] Univ Vienna, Div Cardiol, Dept Internal Med 2, A-1090 Vienna, Austria
[2] Univ Vienna, Div Cardiol, Dept Cardiol, A-1090 Vienna, Austria
[3] Univ Vienna, Div Cardiol, Dept Radiol, A-1090 Vienna, Austria
[4] Univ Vienna, Div Cardiol, Dept Cardiothorac Surg, A-1090 Vienna, Austria