1. Department of Neurologic Surgery, Mayo College of Medicine, 200 First Street SW, Rochester, MN 55905, USA
2. Summer Undergraduate Research Fellowship Program, Mayo Graduate School, Mayo College of Medicine, 200 First Street SW, Rochester, MN 55905, USA
3. Department of Biochemistry and Molecular Biology, Mayo College of Medicine, 200 First Street SW, Rochester, MN 55905, USA