1. Roger H. Johnson Vision Clinic, Seattle Children's Hospital, Division of Ophthalmology, Seattle, Washington, United States
2. University of Washington, Department of Ophthalmology, Seattle, Washington, United States
3. University of Washington School of Medicine, Department of Otolaryngology, Seattle, Washington, United States
4. Seattle Children's Hospital, Department of Neurology/Division of Pediatric Neurology, Neuroscience Institute, Seattle, Washington, United States
5. Seattle Children's Hospital, Department of Radiology, Seattle, Washington, United States