Prażmowska, Barbara, Małgorzata Dziubak, Agnieszka Leszczyńska, and Tomasz Tomasik. 2010. “Early Diagnosis of Hearing Impairment in Newborns”. European Journal of Clinical and Experimental Medicine 8 (3):314–322. https://journals.ur.edu.pl/ejcem/article/view/13039.