Efficacy and Safety of Standardized Ethanol Extract of Purple Perilla (<i>Perilla frutescens</i> Britton var. <i>acuta</i> Kudo) Leaves in Cognitive Impairment: A Randomized, Double-Blind, Placebo-Controlled Clinical Trial.
The comprehension subscale also showed a trend toward a between-group difference ( p = 0.080).
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