1. Department of Neurology; University of Colorado School of Medicine, Anschutz Medical Campus; 12631 East 17th Avenue Aurora Colorado USA
2. Department of Neurology; Mayo Clinic College of Medicine; Rochester Minnesota USA
3. Department of Psychiatry and Psychology; Mayo Clinic College of Medicine; Rochester Minnesota USA
4. Division of Musculoskeletal Radiology; Department of Radiology; Mayo Clinic College of Medicine; Rochester Minnesota USA