Vento, G., M. Tana, and C. Tirone, et al. 2013. “Efficacy of Exogenous Surfactant During Conventional and Highfrequency Oscillatory Ventilation in Preterm Infants With RDS”. Acta Biomedica Atenei Parmensis 84 (1): 25-27. https://mattioli1885journals.com/index.php/actabiomedica/article/view/2941.