1. From the Neurological Outcome Measures Unit (J.C.H., A.J.T.), Institute of Neurology, Queen Square, London, United Kingdom; Roudebush Veterans Affairs Medical Centre (L.S.W.), Indianapolis, Ind; Department of Neurology (L.S.W., K.M.), Indiana University School of Medicine, Indianapolis; and Regenstrief Institute for Health Care (L.S.W.), Indianapolis.