Riccò, Matteo, Luigi Vezzosi, Federica Balzarini, Giovanni Gualerzi, Silvia Ranzieri, Rola Khamisy-Farah, and Nicola Luigi Bragazzi. “Vaccines Are Underused in Pregnancy: What about Knowledge, Attitudes and Practices of Providers?”. Acta Biomedica Atenei Parmensis 91, no. 3-S (April 10, 2020): 55–62. Accessed September 23, 2021. https://www.mattioli1885journals.com/index.php/actabiomedica/article/view/9442.