?:authorAffiliation
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[\'Neurology Department, Saudi German Hospital, Madinah, Saudi Arabia; Neurology Department, Faculty of Medicine, Al-Azhar University, Cairo, Egypt.\', \'Neurology Department, Saudi German Hospital, Madinah, Saudi Arabia; Neurology Department, Faculty of Medicine, Ain Shams University, Cairo, Egypt.\', \'Neurology Department, Saudi German Hospital, Madinah, Saudi Arabia; Neurology Department, Faculty of Medicine, Tanta University, Tanta, Egypt.\', \'Neurology Department, Saudi German Hospital, Jeddah, Saudi Arabia. Electronic address: ahkady86@gmail.com.\', \'Division of Neurology, Department of Medicine, University of Alberta, Edmonton, AB, Canada.\']
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