[1] Univ Leipzig, Ctr Heart, Dept Cardiol, D-04289 Leipzig, Germany
[2] Univ Leipzig, Ctr Heart, Dept Cardiac Surg, D-04289 Leipzig, Germany
[3] Univ Leipzig, Ctr Heart, Dept Anesthesiol, D-04289 Leipzig, Germany
[4] Univ Leipzig, Ctr Heart, Dept Pathol, D-04289 Leipzig, Germany