1. Department of Neurology, Mayo Clinic College of Medicine, Rochester, Minnesota
2. Division of Endocrinology, Mayo Clinic College of Medicine, Rochester, Minnesota
3. Department of Ophthalmology, Mayo Clinic College of Medicine, Rochester, Minnesota
4. Department of Ophthalmology, University of Wisconsin Madison, Madison, Wisconsin
5. Division of Nephrology and Hypertension, Mayo Clinic College of Medicine, Rochester, Minnesota
6. Division of Epidemiology, Mayo Clinic College of Medicine, Rochester, Minnesota
7. Division of Biostatistics, Mayo Clinic College of Medicine, Rochester, Minnesota