1. Department of Neurology, Mayo Clinic College of Medicine, Rochester, Minnesota
2. Department of Laboratory Medicine and Pathology, Mayo Clinic College of Medicine, Rochester, Minnesota
3. Department of Radiology (Division of Neuroradiology), Mayo Clinic College of Medicine, Rochester, Minnesota
4. Department of Ophthalmology, Mayo Clinic College of Medicine, Rochester, Minnesota
5. Department of Pediatrics, University of Colorado School of Medicine, Aurora
6. Department of Neurology, University of Colorado School of Medicine, Aurora