DOI:
10.1055/s-00000099
Zeitschrift für Orthopädie und Unfallchirurgie
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References
Farrar JT, Young JP, LaMoreaux L. et al.
Clinical importance of changes in chronic pain intensity measured on an 11-point numerical pain rating scale.
Pain 2001;
94: 149-158
doi:10.1016/s0304-3959(01)00349-9
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