1. Department of Medicine, Universitat de Lleida, Lleida, Spain
2. Consorci Sanitari de Terrassa, Clinical Research Group for Brain, Cognition and Behavior, Terrassa, Spain
3. Neuropsychology Unit, Hospital de Terrassa, Consorci Sanitari de Terrassa, Terrassa, Spain
4. Institute for Biomedical Research in Lleida Dr. Pifarré Foundation, IRBLLEDA, Universitat de Lleida, Hospital Universitari Arnau de Vilanova de Lleida, Lleida, Spain
5. Reumatology Section, Fibromyalgia and Chronic Fatigue Syndrome Unit, GSS-Hospital Universitari de Santa Maria, Lleida, Spain
6. Department of Psychiatry, GSS-Hospital Universitari de Santa Maria, Lleida, Spain
7. Department of Mental Health, Sant Joan De Déu Terres de Lleida, Lleida, Spain