1. Department of Anesthesiology, Intensive Care Emergency Medicine and Multidisciplinary Pain Center Ziekenhuis Oost‐Limburg Belgium
2. Pain Medicine Division, Department of Anesthesiology Johns Hopkins School of Medicine Baltimore USA
3. Department of Anesthesiology, Pain Medicine and Neurology Maastricht University Medical Center Maastricht The Netherlands
4. Department of Anesthesiology, Perioperative and Pain Medicine, Brigham and Women's Hospital, Leroy D. Vandam Professor of Anesthesia Harvard Medical School Boston Massachusetts USA
5. Department of Anesthesiology, UMCG Pain Center, University Medical Center Groningen University of Groningen Groningen The Netherlands