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VAS scores of Group MeCbl+mNGF were significantly lower than that of Group MeCbl at 1 week (4.32 ± 0.75 vs 5.25 ± 0.79, P < 0.05), 4 weeks (2.65 ± 0.48 vs 3.42 ± 0.52, P < 0.05), 12 weeks (1.72 ± 0.36 vs 2.45 ± 0.39, P < 0.05), and 12 months (1.12 ± 0.22 vs 1.52 ± 0.24, P < 0.05). *Significant when P < 0.05.
