Belief reinforcement: one reason why costs for low back pain have not decreased.

30 , 50 These will not be discussed, other than to say that they are likely to be significant with treatments that are readily acceptable to the nonmedical person, especially if heavily sold to them. 4 , 13 , 25 , 51 , 52 “What does manipulation do?” revisited There is now convincing evidence for the long-proposed activation of inbuilt inhibitory pain system(s), and as a result pain relief

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