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Efficacy and Safety of Guilingji Capsules (龟龄集胶囊) for Treating Mild-to-Moderate Cognitive Impairment: Study Protocol for A Randomized, Double-Blind, Positive-Controlled, Multicenter and Noninferiority Trial

Crossref DOI link: https://doi.org/10.1007/s11655-020-2723-5

Published Online: 2020-08-05

Published Print: 2020-08

Update policy: https://doi.org/10.1007/springer_crossmark_policy

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