1 Department of Cardiothoracic Surgery, Catharina Hospital, Michelangelolaan 2, PO Box 1350, 5602 ZA Eindhoven, The Netherlands. Electronic address: kayan.lam@catharinaziekenhuis.nl.
2 Department of Cardiothoracic Surgery, Catharina Hospital, Michelangelolaan 2, PO Box 1350, 5602 ZA Eindhoven, The Netherlands.