Received: 26 January 2021
Accepted: 11 April 2021
First Online: 28 April 2021
: A written consent was taken from all patients accepting to participate in our research work. The Fayoum University Research Ethics Committee (The reference number is not applicable) approved this retrospective study.
: All patients included in this research gave written informed consent to publish the data contained within this study. If the patients were less than 16 years old, deceased, or unconscious when consent for publication was requested, written informed consent for the publication of this data was given by their parents or legal guardians.
: The authors declare that they have no competing interests.