1 Department of Cardiothoracic Surgery, University Hospital, Maastricht, The Netherlands ; ; Department of Heart and Vessels, Careggi Hospital, Florence, Italy ;
2 Department of Heart and Vessels, Careggi Hospital, Florence, Italy ;
3 Cardiothoracic Surgery, University Hospital, Brussels, Belgium.
4 Department of Cardiothoracic Surgery, University Hospital, Maastricht, The Netherlands ;
5 Department of Cardiothoracic Surgery, University Hospital, Maastricht, The Netherlands ; ; Cardiothoracic Surgery, University Hospital, Brussels, Belgium.