Russel R. Lonser, MD, is Professor and Chair of the Department of Neurological Surgery at The Ohio State University Wexner Medical Center in Columbus, Ohio. In his roles in organized neurosurgery, Dr. Lonser is involved in the education of neurosurgeons in North America and around the world. He has published over 200 articles in medical journals devoted to advanced echniques and new methods of caring for patients with tumors of the nervous system. J. Bradley Elder, MD, is Associate Professor and Director of Neurosurgical Oncology in the Department of Neurological Surgery at The Ohio State University Wexner Medical Center, in Columbus, Ohio. Dr. Elder specializes in caring for patients with tumors of the brain and spine, and is active in clinical and translational neurosurgical oncology research including involvement with national clinical trial cooperatives and multi-institutional scientific collaborations.