1. Department of Ophthalmology, Mayo Clinic, Rochester, Minnesota
2. Department of Neurology, Mayo Clinic, Rochester, Minnesota
3. Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, Minnesota
4. Center for Multiple Sclerosis and Autoimmune Neurology, Mayo Clinic, Rochester, Minnesota
5. Department of Ophthalmology, Wills Eye Hospital, Philadelphia, Pennsylvania
6. National Eye Institute, National Institutes of Health, Bethesda, Maryland
7. Department of Ophthalmology, Jules Stein Eye Institute, University of California, Los Angeles