1 Eric J. Lehrer, MD, Department of Radiation Oncology, Mayo Clinic, Rochester, MN; Daniel M. Trifiletti, MD, Department of Radiation Oncology, Mayo Clinic, Jacksonville, FL; Camilo E. Fadul, MD, Division of Neuro-Oncology, Department of Neurology, University of Virginia, Charlottesville, VA; Paul D. Brown, MD, Department of Radiation Oncology, Mayo Clinic, Rochester, MN; and Jason P. Sheehan, MD, PhD, Department of Neurological Surgery, University of Virginia, Charlottesville, VA.