1. Department of Behavioral Sciences Methods, University of Barcelona, Barcelona, Spain;
2. Institute of Neurosciences, University of Barcelona, Barcelona, Spain;
3. Hospital Benito Menni CASM, Sisters Hospitallers, Sant Boi de Llobregat, Spain;
4. Department of Psychiatry, International University of Catalonia, Barcelona, Spain;
5. Benito Menni CASM, Granollers General Hospital, Granollers, Spain;
6. Department of Social Psychology and Behavioral Sciences Methods, University of the Basque Country UPV/EHU, San Sebastian, Spain;
7. Biodonostia Health Research Institute, San Sebastian, Spain;
8. Department of Methodology and Basic Psychology, University of Murcia, Murcia, Spain;
9. Universidad Loyola Andalucía, Spain;
10. ICF Research Branch, a cooperation partner within the World Health Organization Collaborating Centre for the Family of International Classifications in Germany (at DIMDI), Nottwil, Switzerland;
11. Swiss Paraplegic Research, Nottwil, Switzerland