Article History
Received: 7 January 2020
Accepted: 18 December 2020
First Online: 14 January 2021
Ethics approval and consent to participate
: The study was performed in accordance with the Declaration of Helsinki and approved by the ethical committee of Menoufiya Faculty of Medicine dating 13 November 2016. The committee’s reference number is not applicable. Informed verbal consent obtained from all subjects before the study was commenced after fully explaining the study and its aims to them.
: Not applicable
: The authors, their immediate families, and any research foundations with which they are affiliated have not received any financial payments or other benefits from any commercial entity related to the subject of this work. “The authors declare that they have no competing interests”.