1. Vitali C, Bombardieri S, Moutsopoulos HM, Balestrieri G, Bencivelli W, Bernstein RM, et al. Preliminary criteria for the classification of Sjogren’s syndrome. Arthritis Rheum. 1993;36:340–7.
2. Vitali C, Bombardieri S, Jonsson R, Moutsopoulos HM, Alexander EL, Carsons SE, et al. Classification criteria for Sjogren’s syndrome: a revised version of the European criteria proposed by the American-European Consensus Group. Ann Rheum Dis. 2002;61:554–8.
3. García-Carrasco M, Ramos-Casals M, Font J, Vives J. Interpretación de las pruebas inmunológicas en el síndrome de Sjögren. In: Ramos-Casals M, García-Carrasco M, Anaya JM, Coll J, Cervera R, Font J, Ingelmo M, editors. Síndrome de Sjögren. Barcelona: Masson; 2003. p. 445–66.
4. Fauchais AL, Lambert M, Launay D, Michon-Pasturel U, Queyrel V, Nguyen N, et al. Antiphospholipid antibodies in primary Sjogren’s syndrome: prevalence and clinical significance in a series of 74 patients. Lupus. 2004;13:245–8.
5. Cervera R, Garcia-Carrasco M, Font J, Ramos M, Reverter JC, Munoz FJ, et al. Antiphospholipid antibodies in primary Sjogren’s syndrome: prevalence and clinical significance in a series of 80 patients. Clin Exp Rheumatol. 1997;15:361–5.