1. From the Department of Neurology, Mayo Clinic, Phoenix, AZ (B.M.D., B.B.V, D.D.C.); Barrett Honors College, Arizona State University, Tempe, AZ (S.V.); University of Arizona College of Medicine, Phoenix, AZ (S.V.); and the Biostatistics Unit, Division of Health Sciences Research, Mayo Clinic, Scottsdale, AZ (Q.W., J.G.H.).