1. Sjogren Syndrome Research Group (AGAUR), Department of Autoinmune Diseases, ICMiD, Hospital Clinic, Barcelona, Spain
2. Rheumatology Department, Hospital Universitari Parc Taulí, Sabadell, Barcelona, Spain
3. Primary Care Centre Les Corts, Consorci d’Atenció Primària De Salut Barcelona Esquerra (CAPSBE), Barcelona, Spain
4. Primary Healthcare Transversal Research Group, Institut d’Investigacions Biomèdiques August Pi I Sunyer (IDIBAPS), Barcelona, Spain
5. Laboratory of Autoimmune Diseases Josep Font, IDIBAPS-CELLEX, Barcelona, Spain
6. Autoimmune Diseases Unit, Department of Medicine, Hospital CIMA-Sanitas, Barcelona, Spain