Ciccia, F., Guggino, G., Ferrante, A., Raimondo, S., Bignone, R., Rodolico, V., Peralta, S., Van Tok, M., Cannizzaro, A., Schinocca, C., Ruscitti, P., Cipriani, P., Giacomelli, R., Alessandro, R., Dieli, F., Rizzo, A., Baeten, D., & Triolo, G. (2016). interleukin‐9 Overexpression and Th9 Polarization Characterize the Inflamed Gut, the Synovial Tissue, and the Peripheral Blood of Patients With Psoriatic Arthritis. Arthritis & rheumatology, 68(8), 1922–1931. http://access.bl.uk/ark:/81055/vdc_100034714012.0x00003a