Received: 11 August 2020
Accepted: 20 June 2021
First Online: 2 August 2021
: This study was approved by the ethics committee of the Department of Neurosurgery, Kasr Alainy Faculty of Medicine, Cairo University, on the 9th of June 2018.Reference Number: Not applicable.All participants provided informed written consent to participate in the study.
: Not applicable.
: The authors declare that they have no competing interests.