title: Letter: Extrapyramidal diseases and dementia.
mesh_terms: D000368:Aged; D001921:Brain / Q000201:enzymology; D003704:Dementia / Q000150:complications* / Q000201:enzymology / Q000378:metabolism; D005968:Glutamate Decarboxylase / Q000378:metabolism; D006801:Humans; D010300:Parkinson Disease / Q000150:complications* / Q000201:enzymology / Q000378:metabolism; D005680:gamma-Aminobutyric Acid / Q000378:metabolism
chemical_list: D005680:gamma-Aminobutyric Acid; D005968:Glutamate Decarboxylase