Received: 13 November 2020
Accepted: 2 July 2021
First Online: 20 July 2021
: This work has been approved by the ethics committee in the Department of Neurosurgery, Faculty of Medicine, Beni-Suef University (2014). Reference number is not applicable.Consent to participate has been approved also by the same committee.
: Not applicable.
: The authors declare that they have no competing interests.