1 From the Department of Neurology (K.J.G., M.T., R.M.); and Neurology and Laboratory Medicine and Pathology (E.P.F.), Mayo Clinic Rochester.
2 From the Department of Neurology (K.J.G., M.T., R.M.); and Neurology and Laboratory Medicine and Pathology (E.P.F.), Mayo Clinic Rochester. [email protected].