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. 2020 Apr 1;33(2):183–191. doi: 10.3344/kjp.2020.33.2.183

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© The Korean Pain Society, 2020

This is an open-access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0), which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Fig. 3 — Mean MEDD used by the study group over time. Exact mean and standard deviation values are indicated within each bar and adjacent to each whisker, respectively. MEDD: morphine equivalent daily dose. *Significantly different (P < 0.05) median value compared to that at baseline.