Seedahmed, Khalid Mahmoud Sayed http://orcid.org/0000-0001-8605-7283
El-Haj, Abusufian Hassan
Bashir, Ahmed Mohammed Ahmed
Article History
Received: 9 September 2021
Accepted: 12 February 2022
First Online: 7 March 2022
Declarations
:
: Written approval had been gained from the ethical committee at the research unit (EDC) in the Sudan Medical Specialization board. Written permission had been obtained from the administrative authority of otolaryngology in Khartoum state hospitals. Study data/information was used for the research purpose only. Informed written consents were taken from all the patients (or one of their parents in case of children younger than 16 years old) to participate in this study. The confidentiality issue was intentionally considered. The participation was voluntary. Any participant has had the right to withdraw at any stage.
: Not applicable (no individual personal data included).
: The authors declare that they have no competing interests.