[1] Hosp Clin Barcelona, Dept Autoimmune Dis, Lab Autoimmune Dis Josep Font, IDIBAPS,ICMiD, Barcelona, Spain
[2] IDIBAPS, Ctr Assistencia Primaria ABS Les Corts, Primary Care Res Grp, Gesclinic, Spain
[3] Hosp Valle De Hebron, Dept Internal Med, Barcelona, Spain
[4] Hosp Ramon & Cajal, Dept Internal Med, Madrid, Spain
[5] Hosp Univ Cent Asturias, Dept Internal Med, Oviedo, Spain
[6] Complejo Hosp Univ, Dept Internal Med, Vigo, Spain
[7] Hosp Son Espases, Dept Internal Med, Palma De Mallorca, Spain
[8] Hosp Joan 23, Dept Internal Med, Tarragona, Spain
[9] Hosp Infanta Sofia, Dept Internal Med, Madrid, Spain
[10] Hosp Gregorio Maranon, Dept Internal Med, Madrid, Spain
[11] Hosp Cabuenes, Dept Internal Med, Gijon, Spain
[12] Hosp Infanta Leonor, Dept Internal Med, Madrid, Spain
[13] Hosp Meixoeiro, Dept Internal Med, Vigo, Spain
[14] Hosp Sagunto, Dept Internal Med, Valencia, Spain
[15] Hosp Esperit St, Dept Internal Med, Badalona, Spain
[16] Complejo Hosp Albacete, Dept Internal Med, Albacete, Spain