. 2016 Mar 31;82(6):702–709. doi: 10.1016/j.bjorl.2015.12.010
© 2016 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/).