Document is current

Article History

Received: 18 October 2017

Accepted: 26 March 2018

First Online: 25 April 2018

Ethics approval and consent to participate

: The aim and procedures of the study were explained to every participant, and an informed consent was obtained from all participants before being enrolled in the study. The study was approved by the ethical committee at the Department of Neurology, Faculty of medicine, Cairo University.

: The authors declare that they have no competing interests.

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