Monno, R., M.E. Baldassarre, F. Ghezzani, L. Fumarola, and E. Ierardi. ‚ÄúTRASMISSIONE DI HELICOBACTER PYLORI NEL PERIODO PERINATALE‚ÄĚ. Microbiologia Medica 22, no. 3 (September 30, 2007). Accessed September 19, 2020. https://www.pagepressjournals.org/index.php/mm/article/view/2725.