Randomised double-blind comparison of the incidence of tardive dyskinesia in patients with schizophrenia during long-term treatment with olanzapine or haloperidol. - Beasley,C.M.; Dellva,M.A.; Tamura,R.N.; Morgenstern,H.; Glazer,W.M.; Ferguson,K. (Br J Psychiatry, 1999)