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They were considered potential cases for lumbar surgery. Setting: secondary. Design: unknown Canal and recess stenosis Diagnosis by physical and neurological examination, imaging and surgery McGill Pain Questionnaire Mann . 1991 1992 1993 [43,44,45] 250 A. 25. B+C. 250 Unknown Unknown Five categories of patients were selected, with 50 patients in each category: benign back pain, herniated ... ................
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