Received: 8 June 2020
Accepted: 22 July 2020
First Online: 26 October 2020
Ethics approval and consent to participate
: This study was approved by the institute ethics and research committee in the Department of Otorhinolaryngology–Fayoum University Hospital. The aim of the procedure was clearly explained, and all patients gave their informed written consents.
: Not applicable.
: The authors declare that they have no competing interests.