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Impact of the Change in mRS From Prestroke to 3 Months Poststroke (ΔmRS) on 1- and 5-Year Mortality, Institutionalization, and Death/Institutionalization for 3-Month Survivors of Ischemic Stroke With Premorbid mRS of 2 to 4—Controlling for Age, Sex, and NIHSS Score at Acute Presentation
