Zicari, Anna Maria, et al. “Respiratory Infections in Allergic Children: The Preventive Role of a Multicomponent Nutraceutical”. Acta Biomedica Atenei Parmensis, vol. 91, no. 3, Sept. 2020, p. e2020072, https://doi.org/10.23750/abm.v91i3.10550.