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Fig. 2. Study flow chart with specific causes of study interruptions and dropouts. The flow chart of this study is based on the CONSORT Statement. Group C: retrolaminar injection with saline, Group R: retrolaminar block with local anesthetics, PCA: controlled analgesia.
Korean J Pain 2020;33:378~385 https://doi.org/10.3344/kjp.2020.33.4.378
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