1. Department of Nursing and Physiotherapy; University of Cadiz; Cadiz Spain
2. Department of Statistics and Operational Research; University of Cadiz; Cadiz Spain
3. Institute of Research and Innovation in Biomedical Sciences of the Province of Cadiz (INiBICA); University of Cadiz; Cadiz Spain
4. Observatory of Pain; Grünenthal Foundation-University of Cadiz; Cadiz Spain
5. Department of Physiotherapy; University of Malaga; Malaga Spain