Received: 16 June 2020
Accepted: 7 January 2021
First Online: 3 March 2021
Ethics approval and consent to participate
: This study was approved by the local ethics committee Institutional Research Board (IRB) of Departments of Neurology, Mansoura Faculty of Medicine, Egypt.Code RP. 19.10.45 date 30 October 2019. Patients and their families were told about the study in detail and written informed consent was taken.
: Not applicable.
: The authors declare that they have no competing interests.