1. Rheumatology Research Group, Vall d‘Hebron Research Institute, Barcelona, 08035, Spain
2. Rheumatology Department, Hospital Universitari de Bellvitge, Barcelona, 08907, Spain
3. Rheumatology Department, Complejo Hospitalario Juan Canalejo, A Coruña, 15006, Spain
4. Rheumatology Department, Hospital Parc Taulí, Sabadell, Barcelona, 08208, Spain
5. Rheumatology Department, Hospital Universitario Central de Asturias, Oviedo, 33006, Spain
6. Rheumatology Department, Hospital Virgen de la Vega, Salamanca, 37007, Spain
7. Rheumatology Department, Hospital Monte Naranco, Oviedo, 33012, Spain
8. Rheumatology Department, Hospital de Jerez de la Frontera, Cádiz, 11407, Spain
9. Rheumatology Department, Hospital Instituto de Investigación Biomédica de Málaga, Hospital Regional Universitario de Málaga, Universidad de Málaga, 29009, Spain
10. Rheumatology Department, Hospital Universitario Infanta Sofía, Madrid, 28702, Spain
11. Rheumatology Department, Hospital Universitario Gregorio Marañón, Madrid, 28009, Spain
12. Rheumatology Service, Hospital Moisès Broggi, Barcelona, Spain
13. Rheumatology Department, Hospital Universitario Fundación Alcorcón, Madrid, 28922, Spain
14. Rheumatology Department, Hospital Sant Rafael, Barcelona, 08035, Spain
15. Rheumatology Department, Hospital Universitario de La Princesa, IIS-Princesa, Madrid, 28006, Spain
16. Rheumatology Department, Centro de Salud Virgen de los Reyes, Sevilla, Spain
17. Rheumatology Department, Hospital Mútua de Terrassa, Terrassa, Spain
18. Rheumatology Unit, Hospital de la Santa Creu i Sant Pau, Barcelona, Spain
19. Rheumatology Department, Hospital Universitario Marqués de Valdecilla, Santander, Spain
20. Rheumatology Department, Complexo Hospitalario de Ourense, Ourense, Spain
21. Rheumatology Department, Complejo Hospitalario Hospital Provincial de Pontevedra, Pontevedra, Spain
22. Rheumatology Department, Hospital General Universitario de Alicante, Alicante, Spain
23. Rheumatology Department, Hospital Universitario Guadalajara, Guadalajara, Spain
24. Rheumatology Department, Hospital La Mancha Centro, Alcázar de San Juan, Spain
25. Rheumatology Department, Hospital Clínic de Barcelona and IDIBAPS, Barcelona, 08036, Spain