1. Department of Neurology, Mayo Clinic, Rochester, Minnesota
2. Department of Ophthalmology, Mayo Clinic, Rochester, Minnesota
3. Division of Endocrinology, Diabetes, Metabolism & Nutrition, Mayo Clinic, Rochester, Minnesota
4. Division of Epidemiology, Mayo Clinic, Rochester, Minnesota
5. Division of Biomedical Statistics and Informatics, Mayo Clinic, Rochester, Minnesota
6. Department of Ophthalmology and Visual Sciences, University of Wisconsin–Madison, Madison, Wisconsin