Article History
Received: 17 April 2020
Accepted: 21 August 2020
First Online: 9 December 2020
Ethics approval and consent to participate
: Beni-Suef University, Faculty of Medicine, ENT department, has approved the study protocol (FMBSUREC/03112019/Mahmoud). Written informed consent was obtained from participants before the examination.
: Not applicable
: The authors have no financial conflicts of interest in the publication of these data.