Elmoursy, Mohamed M. http://orcid.org/0000-0003-0883-3018
Elbahrawy, Mahmoud M.
Article History
Received: 25 September 2020
Accepted: 5 April 2021
First Online: 21 April 2021
Declarations
:
: The present study was approved by the Medical Research Ethics Committee at Al-Azhar University (Assiut branch) and was carried out following the code of Ethics 143/5 and the number of paper 9. Informed and written consent was taken from all participants as well as from their parents or legal guardians in the case of children under 16 years old.
: Not applicable
: The authors declare that they have no competing interests.