1 From the Department of Neurology (C.E.L.), Frontotemporal Disorders Unit, Massachusetts General Hospital and Harvard Medical School, Boston; Faculty of Health Sciences, Brain and Mind Centre (C.E.L.), The University of Sydney, Australia; Johns Hopkins University School of Medicine (A.E.H.); and Departments of Neurology, Physical Medicine & Rehabilitation, and Cognitive Science (A.E.H.), Johns Hopkins University, Baltimore, MD.
2 From the Department of Neurology (C.E.L.), Frontotemporal Disorders Unit, Massachusetts General Hospital and Harvard Medical School, Boston; Faculty of Health Sciences, Brain and Mind Centre (C.E.L.), The University of Sydney, Australia; Johns Hopkins University School of Medicine (A.E.H.); and Departments of Neurology, Physical Medicine & Rehabilitation, and Cognitive Science (A.E.H.), Johns Hopkins University, Baltimore, MD. argye@jhmi.edu.