[Julia, Antonio;Lopez-Lasanta, Maria;Tortosa, Raul;Palau, Nuria;Marsal, Sara] Vall dHebron Hosp, Res Inst, Rheumatol Res Grp, Barcelona, Spain
[Pinto-Tasende, Jose A.] Complejo Hosp Univ A Coruna, La Coruna, Spain
[Gratacos, Jordi] Hosp Parc Tauli, Rheumatol Dept, Sabadell, Barcelona, Spain
[Queiro, Ruben] Hosp Univ Cent Asturias, Rheum Derm Unit, Oviedo, Spain
[Alberto Montilla-Morales, Carlos] Univ Salamanca, Hosp Clin, Salamanca, Spain
[Carlos Torre-Alonso, Juan] Hosp Monte Naranco, Unit Rheumatol, Oviedo, Spain
[Perez Venegas, Jose Javier] Hosp Jerez De La Frontera, Rheumatol, Jerez de la Frontera, Spain
[Fernandez-Nebro, Antonio] Univ Malaga, Dept Med & Dermatol, Hosp Reg, Inst Invest Biomed Malaga,IBIMA,UGC Reumatol, Malaga, Spain
[Fernandez, Emilia;Munoz-Fernandez, Santiago] Hosp Univ Infanta Sofia, Madrid, Spain
[Gonzalez, Carlos M.] Univ Gregorio Maranon, Hosp Gen, Serv Reumatol, Madrid, Spain
[Roig, Daniel] Hosp Univ Bellvitge, Hosp Llobregat, Rheumatol Serv, Barcelona, Spain
[Zarco, Pedro] H Fdn Alcorcon, Alcorcon, Spain
[Erra, Alba] Hosp St Rafael, Rheumatol Dept, Barcelona, Spain
[Rodriguez, Jesus] Hosp Univ Bellvitge, Rheumat, Barcelona, Spain
[Castaneda, Santos] Hosp Univ Princesa, IIS Princesa, Madrid, Spain
[Rubio-Romero, Esteban] Hosp Univ Virgen Rocio, Seville, Spain
[Salvador, Georgina] Hosp Mutua Terrassa, Rheumatol Unit, Barcelona, Spain
[Diaz-Torne, Cesar] Hosp Univ Santa Creu & St Pau, Rheumatol Dept, Barcelona, Spain
[Blanco, Ricardo] Hosp Marques Valdecilla, Rheumatol Dept, Santander, Spain
[Willisch, Alfredo] Complexo Hosp Ourense, Orense, Spain
[Antonio Mosquera, Jose] Complejo Hosp Prov Pontevedra, Pontevedra, Spain
[Vela, Paloma] Univ Alicante, Hosp Gen, Alicante, Spain
[Tomero, Jesus] Hosp Univ Guadalajara, Rheumatol Dept, Guadalajara, Spain
[Sanchez-Fernandez, Simon] Hosp Gen Mancha Ctr, Rheumatol Dept, Ciudad Real, Spain
[Corominas, Hector] Hosp Univ Santa Creu & St Pau, Rheumatol, Barcelona, Spain
[Ramirez, Julio] Hosp Clin Barcelona, Rheumatol, Barcelona, Spain
[Canete, Juan D.] Hosp Clin Barcelona, Rheumatol Dept, Barcelona, Spain
[Canete, Juan D.] IDIBAPS, Barcelona, Spain