Clustering a large Spanish sample of patients with fibromyalgia using the Fibromyalgia Impact Questionnaire-Revised: Differences in clinical outcomes, economic costs, inflammatory markers, and gray matter volumes

1. Pérez-Aranda, A.
2. Andrés-Rodríguez, L.
3. Feliu-Soler, A.
4. Núñez, C.
5. Stephan-Otto, C.
6. Pastor-Mira, M.A.
7. López-Roig, S.
8. Peñacoba, C.
9. Calandre, E.P.
10. Slim, M.
11. Salgueiro, M.
12. Feixas, G.
13. Luciano, J.V.