1. Department of Thoracic and Vascular Surgery, Antwerp University Hospital, B-2650 Edegem, Belgium
2. Department of Thoracic and Vascular Surgery, Wallonie Picarde Hospital Center (Centre Hospitalier de Wallonie Picarde—CHwapi), B-7500 Tournai, Belgium
3. ASTARC, University of Antwerp, B-2610 Wilrijk, Belgium