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. 2020 Sep 16;13:683–690. doi: 10.2147/CCID.S262839

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© 2020 Sparavigna et al.

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Clinical evaluation of wrinkle severity grade (WSRS reference photographic scale) at the different time points. The values of the score are shown above the boxes, while the values in percentages inside each box represent the percentage of the decrease in severity. * p<0.05, **p<0.01, vs T0 (Wilcoxon test).