1. From the Departments of Anatomic Pathology, Mayo Clinic, Rochester, MN
2. Experimental Pathology, Mayo Clinic, Rochester, MN
3. Department of Human Pathology; Gunma University Graduate School of Medicine; Maebashi Japan
4. Biomedical Statistics and Informatics, Mayo Clinic, Rochester, MN
5. Department of Pathology; Johns Hopkins Hospital; Baltimore MD
6. Pediatric Hematology-Oncology, Mayo Clinic, Rochester, MN
7. Neurology, Mayo Clinic, Rochester, MN
8. Neurologic Surgery, Mayo Clinic, Rochester, MN
9. Cytogenetics Laboratory; Mayo Clinic; Rochester MN