Received: 9 November 2020
Accepted: 7 February 2021
First Online: 24 February 2021
Ethics approval and consent to participate
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards. The current study was also approved by faculty of medicine, Assiut University Ethical Committee (reference number is not available).Informed consent was obtained from all individual participants included in the study.
: All authors consenting for publication.
: Authors declare that they have no competing interests.