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The Ethics of Thrombolytic Trials Beyond 3 (or 4.5) Hours: Randomized Controlled Trials Are Required to Change Clinical Practice
Stroke 40:1545, Donnan,G.A. &Davis,S.M., 2009
Streptokinase for Acute Ischemic Stroke with Relationship to Time of Administration
JAMA 276:961-966, 9951996., Donnan,G.A.,et al, 1996
Use of Placebo Surgery in Controlled Trials of a Cellular-Based Therapy for Parkinson's Disease
NEJM 341:988-992, Freeman,T.B.,et al, 1999