Affiliation: | 1. Department of Surgery, Mayo Clinic, Rochester, Minnesota;2. Department of Surgery, Mayo Clinic, Scottsdale, Arizona;3. Department of Surgery, Mayo Clinic, Jacksonville, Florida;4. Department of Anatomic Pathology, Mayo Clinic, Rochester, Minnesota;5. Department of Clinical Statistics, Mayo Clinic, Rochester, Minnesota;6. Department of Medical Oncology, Mayo Clinic, Rochester, Minnesota |