Mattiuzzi, C.; Henry, B. M.; Sanchis-Gomar, F.; Lippi, G. SARS-CoV-2 Recurrent RNA Positivity After Recovering from Coronavirus Disease 2019 (COVID-19): A Meta-Analysis. Acta Biomed 2020, 91 (3), e2020014. https://doi.org/10.23750/abm.v91i3.10303.