title: Conditioned responses to treatment in chronic pain patients: effects of compensation for work-related accidents.
mesh_terms: D003213:Conditioning, Psychological; D006801:Humans; D010148:Intractable Pain / Q000188:drug therapy / Q000191:economics / Q000523:psychology*; D014481:United States; D014942:Workers' Compensation / Q000331:legislation & jurisprudence