1. Internal Medicine 1; Klinikum Saarbrücken gGmbH; Germany
2. Department Psychosomatic Medicine and Psychotherapy; Technische Universität München; Germany
3. Schmerzmedizin; Universitatsmedizin Gottingen; Germany
4. Alan Edwards Pain Management Unit; McGill University Health Center; Montreal QC Canada
5. Division of Rheumatology; McGill University Health Centre; Montreal QC Canada