1. From the Departments of Neurology and Neurological Sciences (G.W.A., S. Kemp, S.C., J.P.T., S.H., M.M., M.G.L.), Diagnostic Radiology (M.P.M., J.J.H., G.Z.), Radiology (R.B.), and Biomedical Data Science (P.W.L.), Stanford University School of Medicine, Stanford, and the Department of Neurology, Keck School of Medicine, University of Southern California, Los Angeles (M.K.-T.) — both in California; the Departments of Neurology, Anesthesia, Neurosurgery, and Radiology, University of Iowa, Ames (S.O.-G.);...