A Possible Protective Effect of IgA Against Severe Acute Respiratory Syndrome Corona Virus 2 (SARS-CoV-2) in Bronchoalveolar Lavage in COVID-19 Patients Admitted to Intensive Care Unit - Mariantonietta Di Stefano; Lucia Mirabella; Antonella Cotoia; Giuseppina Faleo; Michela Rauseo; Anna Chiara Rizzo; Josè Ramon Fiore; Gilda Cinnella; Gaetano Serviddio (Viruses, 2024)