Kristen M Scheitler1, Cody L Nesvick1, Eelco F Wijdicks2. 1. Department of Neurological Surgery, Mayo Clinic, 200 1st St. SW, Rochester, MN, 55905, USA. 2. Department of Neurocritical Care and Hospital Neurology, Mayo Clinic, 200 1st St. SW, Rochester, MN, 55905, USA. wijde@mayo.edu.