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Cuban patients with Spinocerebellar Ataxia type 2 (SCA2) have reduced concentrations of zinc in serum and cerebrospinal fluid (CSF). To assess the effect and safety of zinc supplementation, 36 Cuban SCA2 patients were randomly assigned to receive daily either 50 mg ZnSO4 or placebo, together with neurorehabilitation therapy in a randomized, double-blind, placebo-controlled clinical trial during 6 months...
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