Affiliation: | 1. Department of Oncology, Mayo Clinic, Rochester, Minnesota;2. Alliance Statistics and Data Center, Mayo Clinic, Rochester, Minnesota;3. Oncology Division, Washington University School of Medicine, St. Louis, Missouri;4. Department of Neurology, Tufts Medical Center, Boston, Massachusetts;5. Department of Hematology/Oncology, Regions Hospital, St Paul, Minnesota;6. Department of Radiology, Mayo Clinic, Rochester, Minnesota;7. Department of Cancer Biology, Mayo Clinic, Jacksonville, Florida;8. Department of Pathology, Mayo Clinic, Rochester, Minnesota;9. Department of Neurology, University of Virginia Medical Center, Charlottesville, Virginia |