1. Department of Surgery, Amphia Hospital , Breda , the Netherlands
2. Department of Surgery, Franciscus Gasthuis and Vlietland , Rotterdam , the Netherlands
3. Department of Surgery, Erasmus Medical Centre , Rotterdam , the Netherlands
4. Department of Anaesthesiology, Intensive Care and Pain Medicine, St Antonius Hospital , Nieuwegein , the Netherlands
5. Department of Cardiothoracic Surgery, St Antonius Hospital , Nieuwegein , the Netherlands
6. Department of Pulmonology, Amphia Hospital , Breda , the Netherlands
7. Department of Anaesthesiology, Intensive Care and Pain Medicine, Amphia Hospital , Breda , the Netherlands
8. Department of Research and Epidemiology, Amphia Hospital , Breda , the Netherlands
9. Management Board, Adrz Hospital , Goes , The Netherlands
10. Department of Intensive Care, Franciscus Gasthuis and Vlietland , Rotterdam , the Netherlands