Statistics Korea / 2012 / Annual report on the causes of death statistics Sabari, J. S. / 1997 / Assessment in Occupational Therapy and Physical therapy / W. B. Saunders Company :249~271 Narasimhalu, K. / 2011 / The prognostic effects of poststroke cognitive impairment no dementia and domain-specific cognitive impairments in nondisabled ischemic stroke patients / Stroke 42(4):883~888 Martin, M. W. / 1995 / Cognition / Harcourt Brace Publishers Wheately, C. J / 1995 / Evaluation and treatment of cognitive dysfunction”, Occupational therapy practice skills of physical dysfunction / Mosby :241~252