Neurology 2017 10;89(17):1841
From the Neurology Department (J.L., C.D., R.A., C.N.), Coimbra University Hospital Centre; Faculty of Medicine (J.L., J.C.), Coimbra University; Institute of Nuclear Sciences Applied to Health/Institute for Biomedical Imaging and Life Sciences (J.C.), Coimbra, Portugal; and Departments of Neurology and Ophthalmology (E.E.), Mayo Clinic, Jacksonville, FL.