[1] Bulovka Hosp, Dept Cardiol, Prague, Czech Republic
[2] IKEM, Dept Cardiovasc Surg, Prague, Czech Republic
[3] Charles Univ Prague, Fac Med 1, Dept Surg 2, Cardiovasc Surg, Prague, Czech Republic
[4] Gen Univ Hosp, Prague, Czech Republic
[5] Charles Univ Prague, Fac Med 1, Dept Cardiovasc Med, Dept Med 2, Prague, Czech Republic
[6] Gen Univ Hosp, Prague, Czech Republic