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Brooks DJ, Frey KA, Marek KL, Oakes D, Paty D, Prentice R, Shults CW, Stoessl AJ. Assessment of neuroimaging techniques as biomarkers of the progression of Parkinson's disease. Exp Neurol. 2003 Nov;184 Suppl 1():S68–79. doi: 10.1016/j.expneurol.2003.08.008. PMID: 14597329. |