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Brady, M and Mackenzie, C and Enderby, P and Whitworth, A and Kelly, Helen and Sellars, C (2011) Opinion: SIGN 118 overlooks new evidence on aphasia. Bulletin of the Royal College of Speech and Language Therapists (705). p. 11.
Kelly, Helen and Brady, M and Enderby, P (2010) Speech and Language Therapy for Aphasia Following Stroke. Cochrane Systematic Review .