A randomized trial comparing ticlopidine hydrochloride with aspirin for the prevention of stroke in high-risk patients - Hass, WK; Easton, JD; Harold, P; Adams, Jr; Pryse-Phillips, W; Molonu, BA; Anderson, S; Kamm, B (N Engl J Med, 1989)
for the Ticlopidine Aspirin Stroke Study.