Ciocci, A., Buratti, L., Coari, G., Di Franco, M., Iagnocco, A., Mauceri, M., & Serio, A. (2001). Rheumatoid arthritis: frequency of hospitalization and evaluation of economic burden. Reumatismo, 53(3), 215–222. https://doi.org/10.4081/reumatismo.2001.215