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MLA Citation
E K Perry et al.. “Cholinergic correlates of cognitive impairment in Parkinson's disease: comparisons with Alzheimer's disease..” Journal of neurology, neurosurgery and psychiatry, vol. 48, no. 5, 1985, pp. 413–421. http://access.bl.uk/ark:/81055/vdc_100135569394.0x00003e