1 Department of Cardiothoracic Surgery, Erasmus University Medical Center, Rm Rg-619, P.O. Box 2040 3000 CA Rotterdam, The Netherlands. Electronic address: d.abjigitova@erasmusmc.nl.
2 Department of Cardiothoracic Surgery, Erasmus University Medical Center, Rm Rg-619, P.O. Box 2040 3000 CA Rotterdam, The Netherlands.