Is there a change in P300 evoked potential after 6 months in cochlear implant users? - Amaral, Maria Stella Arantes do; Calderaro, Victor Goiris; Pauna, Henrique Furlan; Massuda, Eduardo Tanaka; Reis, Ana Cláudia Mirândola Barbosa; Hyppolito, Miguel Angelo (Brazilian Journal of Otorhinolaryngology, 2022)