Skoczynska, M., F. Figus, V. Arena, G. Massazza, and A. Iagnocco. “The Role of PET in a Clinically Silent and Ultrasound Negative Synovitis in the Course of Rheumatoid Arthritis - a Case Report”. Reumatismo, vol. 73, no. 1, Apr. 2021, pp. 64-66, doi:10.4081/reumatismo.2021.1253.