1. Department Internal Medicine 1; Klinikum Saarbrücken gGmbH; Saarbrücken Germany
2. Department Psychosomatic Medicine and Psychotherapy; Technische Universität München; Munich Germany
3. Pharmacology and Therapeutics; School of Medicine; Galway Neuroscience Centre and Centre for Pain Research, NCBES; National University of Ireland Galway; Galway Ireland
4. Department of Perioperative Medicine, Intensive Care and Pain Medicine, Pain Clinic; Helsinki University Hospital and University of Helsinki; Helsinki Finland
5. Department of Anesthesiology, Intensive Care and Pain Treatment; Faculty of Medicine of University Maribor; University Medical Center Maribor and Institute for Palliative Medicine and Care; Maribor Slovenia
6. Department of Special Anaesthesia and Pain Therapy; Medical University of Vienne/AKH; Vienna Austria
7. Leuven Centre for Algology and Pain Management; University Hospital Leuven; Leuven Belgium
8. Department of Pain Center and INSERM U987; Cochin Hospital, AP-HP; Paris Descartes University; Paris France
9. Department of Anaesthesiology and Intensive Care Medicine; Charité University Berlin; Berlin Germany
10. Pain Matters Ltd; Liverpool UK
11. Pain Center; Sourasky Medical Center; Tel Aviv Israel