1 Departments of Ophthalmology and Pediatrics, Emory University School of Medicine, Atlanta, Georgia.
2 Emory University School of Medicine, Atlanta, Georgia.
3 Section of Neuroradiology, Department of Radiology and Imaging Sciences, Indiana University, Indianapolis.
4 Division of Pediatric Radiology and Pediatric Neuroradiology, Russell H. Morgan Department of Radiology and Radiological Science, The Johns Hopkins University School of Medicine, Baltimore, Maryland.