Notarnicola, A., F. Iannone, G. Lopalco, M. Covelli, and G. Lapadula. 2014. “A False Occult Hepatitis B Virus Infection Developed in a Patient With Psoriatic Arthritis under Infliximab and Methotrexate Therapy”. Reumatismo 65 (6), 298-301. https://doi.org/10.4081/reumatismo.2013.727.