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FLACC pain assessment scale score at 24 h after operation. * represents P < 0.05; when compared with group L, the number of patients with scores of 0–3 points in group D was significantly higher than that in group L at 6 h after operation. # represents P < 0.05; when compared with group L, the number of children with scores of 4–10 points in group D was significantly less than that in group L at 6 h after operation
