Received: 12 February 2021
Accepted: 4 May 2021
First Online: 17 May 2021
: The study protocol was approved by Ain Shams University, Faculty of Medicine Research Ethical Committee of Neurology Department (on 19 January 2020). Written informed consent was obtained from the patients participating in the study after informing them about the study rationale and their right to withdraw from the study at any time without any consequences. Committee’s reference number—not applicable.
: Not applicable
: All authors declare that they do not have any competing interests.