1. Department of Neurology, Penn State University Hershey Medical Center, Hershey, Pennsylvania
2. Departments of Pediatrics and Internal Medicine, Division of Neurology, Gilbert and Rose-Marie Chagoury School of Medicine, Lebanese American University, Byblos, Lebanon
3. Departments of Neurological Surgery and Neurology, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania
4. Departments of Neurology and Pediatrics, Children’s National Health System, George Washington University School of Medicine, Washington, District of Columbia