1 From the Department of Neurological Surgery, Loyola University Medical Center, Stritch School of Medicine, Chicago, IL (M.R.R.); Department of Neurological Surgery, Mayo Clinic, Rochester, MN (G.L.); and Department of Neurological Surgery, Washington University School of Medicine, St Louis, MO (G.J.Z.).
2 From the Department of Neurological Surgery, Loyola University Medical Center, Stritch School of Medicine, Chicago, IL (M.R.R.); Department of Neurological Surgery, Mayo Clinic, Rochester, MN (G.L.); and Department of Neurological Surgery, Washington University School of Medicine, St Louis, MO (G.J.Z.). zipfelg@wustl.edu.