Using the Oxford Cognitive Screen to detect cognitive impairment in stroke patients: A comparison with the mini-mental state examination by Mancuso, M, Demeyere, N, Abbruzzese, L, Damora, A, Varalta, V, Pirrotta, F, Antonucci, G, Matano, A, Caputo, M, Caruso, MG, Pontiggia, GT, Coccia, M, Ciancarelli, I, Zoccolotti, P