1 Partner's Neurology Residency Training Program (EM), Massachusetts General & Brigham & Women's Hospitals, Harvard Medical School, Boston, Massachusetts; The Department of Neurology (TCF, EMF), The Dell Medical School, The University of Texas at Austin, Austin, Texas; and Departments of Clinical Neurosciences (FEC, JMB), Surgery (FEC) and Community Health Sciences (JMB), University of Calgary, Calgary, Canada.