1. Department of Ophthalmology, Boston Children's Hospital, Boston, Massachusetts, United States
2. Department of Ophthalmology, Harvard Medical School, Boston, Massachusetts, United States
3. F.M. Kirby Neurobiology Center, Boston Children's Hospital, Boston, Massachusetts, United States
4. Department of Neurology, Boston Children's Hospital, Boston, Massachusetts, United States
5. Department of Neurology, Harvard Medical School, Boston, Massachusetts, United States