Received: 30 June 2021
Accepted: 17 September 2021
First Online: 27 September 2021
: The study was performed after ethical committee approval in accordance with the ethical standards laid down in the 1964 Declaration of Helsinki and its later amendments; the study was approved by the ethical committee of Faculty of Medicine; Ain-Shams university. The committee’s reference number is FMASU M D 209/2018. Consent to participate is not applicable, as the study imposes no additional risk to the participants.
: Identifying information about participants (patients’ identity) did not appear in any part of the manuscript; therefore, consent for publication was not required.
: The authors declare that they have no conflict of interest.