1. Department of Pediatrics, Tawam Hospital, Al Ain, United Arab Emirates;
2. Division of Clinical Genetics and Metabolic Disorders Pediatrics Department, Tawam Hospital, Al Ain, United Arab Emirates;
3. Brigham and Women’s Hospital, Boston, MA, USA;
4. Johns Hopkins Hospital and Health System, Baltimore, MD, USA;
5. Al Ain Hospital, Al Ain, United Arab Emirates;
6. Department of Neurology, Al Tawam Hospital, Al Ain, United Arab Emirates;
7. Department of Neurology, Johns Hopkins University, Baltimore, MD, USA