1. Department of Anesthesiology, Intensive Care, Emergency Medicine and Multidisciplinary Pain Center Ziekenhuis Oost‐Limburg Genk/Lanaken Belgium
2. Pain Medicine Division, Department of Anesthesiology Johns Hopkins School of Medicine Baltimore Maryland USA
3. Department of Anesthesiology and Pain Medicine Rijnstate Ziekenhuis Velp The Netherlands
4. Anesthesiology and Pain Medicine Amsterdam University Medical Centers Amsterdam The Netherlands
5. Department of Anesthesiology UMCG Pain Center Groningen University of Groningen Groningen The Netherlands
6. Department of Anesthesiology and Pain Medicine Erasmusmc Rotterdam The Netherlands
7. Department of Anesthesiology and Pain Medicine University Medical Center Utrecht Utrecht The Netherlands
8. Department of Anesthesiology and Pain Medicine Catharina Ziekenhuis Eindhoven The Netherlands
9. Department of Anesthesiology, Pain and Palliative Medicine Radboud University Nijmegen The Netherlands
10. Department of Anesthesiology and Pain Medicine Brigham & Women's Spine Center Boston Massachusetts USA
11. Department of Anesthesiology and Pain Medicine Maastricht University Medical Center Maastricht The Netherlands