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Relative cost-effectiveness of extensive and light multidisciplinary treatment programs versus treatment as usual for patients with chronic low back pain on long-term sick leave: randomized controlled study.
Skouen JS, Grasdal AL, Haldorsen EM, Ursin H. Skouen JS, et al. Among authors: grasdal al. Spine (Phila Pa 1976). 2002 May 1;27(9):901-9; discussion 909-10. doi: 10.1097/00007632-200205010-00002. Spine (Phila Pa 1976). 2002. PMID: 11979157 Clinical Trial.