. 2017 Dec 26;85(2):136–143. doi: 10.1016/j.bjorl.2017.11.008
© 2017 Associação Brasileira de Otorrinolaringologia e Cirurgia Cérvico-Facial. Published by Elsevier Editora Ltda.
This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).