1. Department of Anesthesiology Universitätskliniken des Saarlandes Homburg/Saar Germany
2. Alan Edwards Pain Management Unit McGill University Health Centre Quebec Canada
3. Division of Rheumatology McGill University Health Centre Quebec Canada
4. Department Internal and Integrative Medicine, Kliniken Essen‐Mitte Faculty of Medicine, University of Duisburg‐Essen Essen Germany
5. Health Care Center for Pain Medicine and Mental Health Saarbrücken Germany
6. Department Psychosomatic Medicine and Psychotherapy Technische Universität München Germany