1. Plymouth UK
2. Cochrane Pain, Palliative and Supportive Care Group; Pain Research Unit, Churchill Hospital; Oxford UK
3. Department of Psychosomatic Medicine and Psychotherapy; Technische Universität München; München Germany
4. Emerita, Regional Centre of Excellence in Palliative Care; Haukeland University Hospital; Bergen Norway
5. Service de Médecine Interne et Thérapeutique; Hôtel Dieu, Université Paris Descartes, INSERM U 987; Paris France
6. School of Rehabilitation Science, College of Medicine; University of Saskatchewan; Saskatoon Canada
7. Cyprus League Against Rheumatism; Nicosia Cyprus
8. Department of Medicine, Division of Preventive Medicine; University of Alberta; Edmonton Canada