Carratù, Pierluigi, Roberto Boffi, Silvano Dragonieri, Elena Munarini, Chiara Veronese, and Piero Portincasa. 2020. “Covid-19 and Ex-Smokers: An Underestimated Prognostic Factor?”. Monaldi Archives for Chest Disease 90 (3). https://doi.org/10.4081/monaldi.2020.1463.