De Bernardis, B., G. Torresini, and M. Bruschi. 2004. “Yersinia Enterocolitica Intestinal Infection With Ileum Perforation: Report of a Clinical Case”. Acta Biomedica Atenei Parmensis 75 (1): 77-81. https://mattioli1885journals.com/index.php/actabiomedica/article/view/2088.