The CATS Group The Canadian American Ticlopidine Study (CATS) in thromboembolic stroke - Gent, M; Easton, J D; Hachinski, V C; Panak, E; Sicurella, J; Blakely, J A; Ellis, D J; Harbinson, J W; Roberts, R S; Turpie, AG G (Lancet, 1989)