Margarucci, Lory Marika, Enrico Montanari, Gianluca Gianfranceschi, Claudio Caprara, Federica Valeriani, Antonio Piccolella, Valentina Lombardi, Elena Scaramucci, and Vincenzo Romano Spica. 2021. “The Role of Vitamin D in Prevention OF COVID-19 and Its Severity: an Umbrella Review: Vitamin D Versus COVID-19: An Umbrella Review”. Acta Biomedica Atenei Parmensis 92 (S6): e2021451. https://doi.org/10.23750/abm.v92iS6.12216.