[1] Hosp Clin Barcelona, Dept Autoinmune Dis, Sjogren Syndrome Res Grp AGAUR, ICMiD, Barcelona, Spain
[2] Hosp Univ Parc Tauli, Rheumatol Dept, Barcelona, Spain
[3] Consorci Atencio Primaria Salut Barcelona Esquerr, Primary Care Ctr Les Corts, Barcelona, Spain
[4] Inst Invest Biomed August Pi & Sunyer IDIBAPS, Primary Healthcare Transversal Res Grp, Barcelona, Spain
[5] IDIBAPS CELLEX, Lab Autoimmune Dis Josep Font, Barcelona, Spain
[6] Hosp CIMA Sanitas, Dept Med, Autoimmune Dis Unit, Barcelona, Spain