[1] Charles Univ Prague, Univ Hosp Motol, Sch Med 2, Prague 5, Czech Republic
[2] Klinikum Bielefeld Mitte, Dept Cardiol & Internal Intens Care, Bielefeld, Germany
[3] Podlesi Hosp, Dept Cardiol, Trinec, Czech Republic
[4] Dept Cardiol, Pleven, Bulgaria
[5] Jagiellonian Univ, Coll Med, Dept Cardiol 2, Krakow, Poland
[6] Int Clin Res Ctr St An, Dept Internal Med Cardioangiol 1, Brno, Czech Republic
[7] Inst Cardiol, Dept Intervent Cardiol & Angiol, Warsaw, Poland
[8] Natl Inst Cardiovasc Dis, Dept Cardiol, Bratislava, Slovakia