Marozzi, S., R. Tolli, S. Bilei, D. Ricci, C. Rossi, and T. Bossù. “Two Episodes of Listeriosis in Pregnancy and Newborns: Investigation, Problems and Considerations”. Italian Journal of Food Safety, vol. 4, no. 2, June 2015, doi:10.4081/ijfs.2015.4567.