Mattiuzzi, C., Henry, B. M., Sanchis-Gomar, F., & Lippi, G. (2020). SARS-CoV-2 recurrent RNA positivity after recovering from coronavirus disease 2019 (COVID-19): a meta-analysis. Acta Biomedica Atenei Parmensis, 91(3), e2020014. https://doi.org/10.23750/abm.v91i3.10303