DOI:
10.1055/s-00000128
physioscience
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References
Childs JD, Piva SR, Fritz JM.
Responsiveness of the numeric pain rating scale in patients with low back pain.
The Spine Journal 2005;
30 (11) 1331-1334 . doi:10.1097/01.brs.0000164099.92112.29
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