Received: 18 December 2020
Accepted: 25 April 2021
First Online: 14 June 2021
: The study was approved by the local Ethics committee of Damietta faculty of medicine Al-Azhar University. Registration Number: IRB 00012367 - 18-12-003. Issuing: 25 Dec 2018, Expiration Date: valid until 24 Dec 2021, Damietta faculty of medicine IRB, Al-Azhar University. Before participation in the study, the study procedure was clarified for each subject, and verbal consent was provided by each person of the participants and was approved by the ethical committee as the study procedure do not interfere with any medical conditions and no effects on the health of participants.
: Not applicable.
: The authors declare that they have no competing interests.