1. Division of Human Genetics, Children's Hospital of Philadelphia, Pennsylvania, United States
2. Division of Neuroradiology, Children's Hospital of Philadelphia, Pennsylvania, United States
3. Division of Neurology, Children's Hospital of Philadelphia, Pennsylvania, United States
4. Department of Neurology, Perelman School of Medicine, University of Pennsylvania, Pennsylvania, United States
5. Department of Pediatrics, Perelman School of Medicine, University of Pennsylvania, Pennsylvania, United States
6. Department of Radiology Perelman School of Medicine, University of Pennsylvania, Pennsylvania, United States
7. Department of Pediatrics, Nemours Children's Health and Sidney Kimmel College of Medicine, Thomas Jefferson University, Philadelphia, Pennsylvania, United States