1. From the Division of Clinical Epidemiology, Royal Victoria Hospital (N.E.M., S.W.-D., R.T.), Montreal; Department of Medicine (N.E.M., S.W.-D., R.C., D.G., R.T.), Department of Epidemiology and Biostatistics (N.E.M., S.W.-D., R.T.), and School of Physical and Occupational Therapy (N.E.M., S.W.-D.), McGill University, Montreal; Departments of Neurology (R.C.) and Nursing (J.B.), Montreal General Hospital, Montreal; and the Department of Neurology, Jewish General Hospital (J.C.), Montreal, Quebec,...