1. Department of Cardiothoracic Surgery, Onze Lieve Vrouwe Gasthuis, Amsterdam, The Netherlands
2. Department of Surgery, Catharina Hospital, Eindhoven, The Netherlands
3. Department of Surgery, Franciscus Gasthuis & Vlietland, Rotterdam/Schiedam, The Netherlands
4. Department of Metabolic Surgery, Metabolic Surgery Clinic, Sisli, Istanbul, Turkey
5. Department of Respiratory Medicine, Catharina Hospital, Eindhoven, The Netherlands
6. SHE School of Health Professions Education, Maastricht University, Maastricht, The Netherlands