Received: 22 January 2022
Accepted: 29 April 2022
First Online: 20 May 2022
: The study protocol was approved by the local Research Ethics Committee (REC) and quality assurance unit, faculty of medicine, Ain Shams in January 2019. Participation was voluntary and all contributors or their first-degree relatives received detailed information about the aims of this research work and an informed consent was obtained prior to the commencement of the study.
: A written informed consent for the publication was obtained from all the participants (or their first degree relatives).
: The authors declare that they have no competing interests. The authors have no conflict of interest to disclose.