Zingarelli, S., P. Airò, M. Frassi, C. Bazzani, M. Scarsi, and M. Puoti. “Prophylaxis and Therapy of HBV Infection in 20 Patients Treated With Disease Modifying Antirheumatic Drugs or With Biological Agents for Rheumatic Diseases”. Reumatismo, vol. 60, no. 1, Mar. 2008, pp. 22-27, doi:10.4081/reumatismo.2008.22.