Received: 8 January 2020
Accepted: 3 July 2020
First Online: 16 July 2020
Ethics approval and consent to participate
: A written informed consent was obtained from every patient or his/her relative to be included in the study. This study was approved by the local research board of the Neurology Department, Faculty of Medicine, Zagazig University, Egypt.
: Not applicable
: The authors declare that they have no competing interests.