Cipriano, E., Ceccarelli, F., Massaro, L., Spinelli, F.R., Alessandri, C., Perricone, C., Valesini, G. and Conti, F. 2015. Joint involvement in patients affected by systemic lupus erythematosus: application of the swollen to tender joint count ratio. Reumatismo. 67, 2 (Sep. 2015), 62–67. DOI:https://doi.org/10.4081/reumatismo.2015.828.