Bonanno, D., Fedele, R., Minciullo, P., Quattrocchi, P. and Ferlazzo, B. (2003) “Idiopathic hypereosinophilic syndrome associated with rheumatoid arthritis A case report”, Reumatismo, 55(3), pp. 181–183. doi: 10.4081/reumatismo.2003.181.