1. Faculty of Medicine, Division of Child Neurology, Department of Pediatrics, University of Jordan, Amman, Jordan
2. Faculty of Medicine, Department of Pediatrics, University of Jordan, Amman, Jordan
3. Faculty of Medicine, Resident Department of Pediatrics, University of Jordan, Amman, Jordan
4. Faculty of Medicine, Department of Ophthalmology, University of Jordan and Jordan University Hospital, Amman, Jordan