1. Department of Surgery, Franciscus Gasthuis & Vlietland, Rotterdam/Schiedam, The Netherlands
2. Department of Internal Medicine, Franciscus Gasthuis & Vlietland, Rotterdam/Schiedam, The Netherlands
3. Department of Internal Medicine, Catharina Hospital, Eindhoven, The Netherlands
4. Department of Intensive Care Medicine, Catharina Hospital, Eindhoven, The Netherlands
5. Metabolic Patient Multidisciplinary Centre, Clínica de Santo António, Lisbon, Portugal
6. Department of Surgery, Whittington Hospital, London, UK
7. Department of Cardiothoracic Surgery, OLVG, Amsterdam, The Netherlands
8. Department of metabolic surgery, Metabolic Surgery Clinic, Istanbul, Turkey
9. Department of Surgery, Virinchi Hospitals, Hyderbad, India