title: Parkinson's disease: etiological considerations.
mesh_terms: D000367:Age Factors; D001933:Brain Stem / Q000473:pathology; D004298:Dopamine / Q000378:metabolism; D006801:Humans; D007031:Hypothalamus / Q000473:pathology; D008959:Models, Neurological; D010300:Parkinson Disease / Q000209:etiology* / Q000378:metabolism / Q000473:pathology
chemical_list: D004298:Dopamine