Brito-Zerón, P., Acar-Denizli, N., Zeher, M., Rasmussen, A., Seror, R., Theander, E., Li, X., Baldini, C., Gottenberg, J., Danda, D., Quartuccio, L., Priori, R., Hernandez-Molina, G., Kruize, A. A., Valim, V., Kvarnstrom, M., Sene, D., Gerli, R., Praprotnik, S., Isenberg, D., Solans, R., Rischmueller, M., Kwok, S., Nordmark, G., Suzuki, Y., Giacomelli, R., Devauchelle-Pensec, V., Bombardieri, M., Hofauer, B., Bootsma, H., Brun, J. G., Fraile, G., Carsons, S. E., Gheita, T. A., Morel, J., Vollenveider, C., Atzeni, F., Retamozo, S., Horvath, I. F., Sivils, K., Mandl, T., Sandhya, P., De Vita, S., Sanchez-Guerrero, J., van der Heijden, E., Trevisani, V. F. M., Wahren-Herlenius, M., Mariette, X., & Ramos-Casals, M. (2017). influence of geolocation and ethnicity on the phenotypic expression of primary Sjögren's syndrome at diagnosis in 8310 patients: a cross-sectional study from the Big Data Sjögren Project Consortium. Annals of the rheumatic diseases, 76(6), 1042–1050. http://access.bl.uk/ark:/81055/vdc_100137792986.0x000055