Spaggiari, L., Bertorelli, G., Ridolo, E., Morelli, I., Guida, L., Pigna, F., Ticinesi, A., Nouvenne, A., Borghi, L., & Meschi, T. (2014). Exacerbations of severe asthma: a focus on steroid therapy. Acta Biomedica Atenei Parmensis, 85(3), 205-215. https://www.mattioli1885journals.com/index.php/actabiomedica/article/view/3551