Castaldi, Silvana, et al. “COVID-19: An Outbreak in a Nursing Home in Spring 2021: COVID 19 and Residential Homes”.
Acta Biomedica Atenei Parmensis
, vol. 92, no. S6, Oct. 2021, p. e2021445,
https://doi.org/10.23750/abm.v92iS6.12231
.