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Fig. 4. Pain visual analogue scales over time in the erector spinae plane block (ESPB) and control groups. Pain intensity at an early postoperative stage was significantly lower in the ESPB than in the control group. Data are expressed as median (interquartile range). PACU: post-anesthesia care unit. *P < 0.008.
Korean J Pain 2019;32:206~214
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