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. 2020 Jun 22;15:937–944. doi: 10.2147/CIA.S251613

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© 2020 Deng et al.

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NRS score at different times after surgery in the four groups. (A) NRS score when patients were at rest. (B) NRS score when patients were active. *P<0.05 compared with R_0.2%, R_0.3% and R_0.4% groups, ^#P<0.05 compared with R_0.3% and R_0.4% groups.