Affanni, P., L. Veronesi, and S. Rizziero, et al. “Status of Immunity Against Poliomyelitis: A Study Among European and Extra-European Young Immigrants Living in Parma”. Acta Biomedica Atenei Parmensis 76, no. 3 (December 1, 2005): 157–164. Accessed February 24, 2025. https://mattioli1885journals.com/index.php/actabiomedica/article/view/2039.