1. Department of Anaesthesiology, Critical Care Medicine and Pain Therapy, Essen, Germany
2. Department of Minimally and General Surgery, Kliniken Essen-Mitte, Essen, Germany
3. Department of Anaesthesiology, Columbia University, New York, USA
4. Department of Anaesthesiology, Tufts Medical Center, Boston, Massachusetts, USA
5. Department of Anaesthesiology, Academic Medical Centre Amsterdam, Amsterdam, the Netherlands
6. VU University Medical Centre Amsterdam, Amsterdam, the Netherlands
7. Department of Anaesthesiology and Perioperative Medicine, University of California, San Francisco, California, USA
8. Department of Anaesthesiology and Intensive Care Medicine, Carl-Gustav Carus University Hospital Dresden, Dresden, Germany
9. Department of Urology, Carl-Gustav Carus University Hospital Dresden, Dresden, Germany
10. Department of Anaesthesiology, Heinrich Heine University Düsseldorf, Düsseldorf, Germany
11. Discipline of Surgery, School of Medicine, University of Ireland, Galway, Ireland
12. Department of Anaesthesiology, Sapporo Medical University School of Medicine, Sapporo, Japan
13. Endocrine Surgery Unit, Royal Melbourne Hospital, Melbourne, Victoria, Australia
14. Department of Anaesthesia and Critical Care, University of Chicago Medical Center, Chicago, Illinois, USA
15. Division of Surgical Oncology and Endocrine Surgery, Vanderbilt University, Nashville, Tennessee, USA
16. Department of General and Endocrine Surgery, Harvard Medical School, Boston, Massachusetts, USA
17. Division of Surgical Oncology – Endocrine Surgery, Medical College of Wisconsin, Milwaukee, Wisconsin, USA
18. Department of Anaesthesiology, University of Groningen, Groningen, the Netherlands
19. Department of Anaesthesiology, Critical Care Medicine and Pain Therapy, Klinikum Bogenhausen, Munich, Germany
20. Department of Surgery, Oregon Health and Science University, Portland, Oregon, USA
21. Department of Surgical Oncology, University of Texas MD Anderson Cancer Center, Houston, USA
22. Department of Anaesthesiology and Perioperative Medicine, Mayo Clinic, Rochester, Minnesota, USA