Received: 28 July 2018
Accepted: 9 August 2019
First Online: 22 August 2019
Ethics approval and consent to participate
: The procedures followed were in accordance with the ethical standards of the responsible committee on human experimentation and with the principles of Helsinki Declaration. Informed consent was obtained from all participants, and ethical approval from the Neuropsychiatry Department Ethical Committee of Ain Shams University was obtained on 20 April 2017 before starting our work.
: Not applicable.
: The authors declare that they have no competing interests.