Neurology Department, AmericanUniversity of Beirut Medical Center, Neurology Department, AmericanUniversity of Beirut Medical Center, Neurology Department, AmericanUniversity of Beirut Medical Center, Department of Pediatrics, Saint George Hospital University Medical Center, University of Balamand, Department of Pediatrics, Hotel Dieu de France Hospital, Rafic Hariri University Hospital, Labib Medical Center, Rafic Hariri University Hospital and American University of Beirut - Department of Neurology