Text and Data Mining valid from 2020-05-05
Received: 17 July 2019
Accepted: 27 February 2020
First Online: 5 May 2020
Ethics approval and consent to participate
: This study was conducted after receiving institutional approval from the Research Ethics Committee under the registration number N 0 REC-AFHG 2018/2 from AL-Azhar University, and informed written consent was obtained from all participants.
: Not applicable.
: The author declares that there are no competing interests.