Bellù, R., Gagliardi, L., & Tagliabue, et al., P. (2013). Survey of neonatal respiratory care and surfactant administration in very preterm infants in the Italian Neonatal Network. Acta Biomedica Atenei Parmensis, 84(1), 7-11. https://mattioli1885journals.com/index.php/actabiomedica/article/view/2936