Investigating the relationship between the immune response and the severity of COVID-19: a large-cohort retrospective study - Margiotta, Riccardo Giuseppe; Sozio, Emanuela; Del Ben, Fabio; Beltrami, Antonio Paolo; Cesselli, Daniela; Comar, Marco; Devito, Alessandra; Fabris, Martina; Curcio, Francesco; Tascini, Carlo; Sanguinetti, Guido (Frontiers in Immunology, 2025)