1. American Psychiatric Association (1980) Diagnostic and statistical manual of mental disorders (DSM-III). Washington DC
2. Burroughs Wellcome Company (June 1983) Clinical Investigator's Manual, BW234U
3. Chouinard G, Annable L, Loss-Chouinard A, Kropsky M (1979) Ethopropazine and benztropine in neuroleptic-induced parkinsonism. J Clin Psychiatry 40:73?81
4. Chouinard G, Ross-Chouinard A, Annable L, Jones BD (1980) Extrapyramidal symptom rating scale. Can J Neurol Sci 7:233
5. Creese I, Snyder SH (1977) A simple and sensitive radioreceptor assay for antischizophrenic drugs in blood. Nature 270:180?182