Basic life support training courses safety and infection risk in Italy during the COVID-19 pandemics. (October 2021) - D'Agostino, Fausto; Rossi, Pasqualino; Agrò, Felice Eugenio; Fusco, Pierfrancesco; Ferri, Claudio; Ciccozzi, Massimo; Scapigliati, Andrea; Ristagno, Giuseppe