1 Department of Neurology and Neurological Sciences, Stanford University, Stanford, California.
2 Sue Anschutz-Rodgers University of Colorado Eye Institute and Department of Ophthalmology, University of Colorado School of Medicine, Aurora, Colorado.
3 Department of Psychiatry, Stanford University, Stanford, California.
4 Departments of Neurology and Neurosurgery, University of Colorado School of Medicine, Aurora, Colorado.
5 Division of Ophthalmology, Uniformed Services University of the Health Sciences, Bethesda, Maryland.