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Neuroimage Clin. 2019;22:101748.Naduthota RM, Bharath RD, Jhunjhunwala K, et al Imaging biomarker correlates with oxidative stress in Parkinson\u2019s disease. Neurol India. 2017;65(2):263-268.Dash SK, Stezin A, Takalkar T, et al Abnormalities of white and gray matter in early multiple system atrophy: comparison of parkinsonian and cerebellar variants. European radiology. 2019;29(2):716-724.","order":7,"name":"Ethics","group":{"name":"EthicsHeading","label":"Study subjects or cohorts overlap"}},{"value":"\u2022 Retrospective\u2022 Case-control study\u2022 Performed at one institution","order":8,"name":"Ethics","group":{"name":"EthicsHeading","label":"Methodology"}}]}}