Exclusion criteria:
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1. A disease with a clear reason that causes low back pain, i.e. lumbar intervertebral disc protrusion, discitis, ankylosing spondylitis, lumbar spinal stenosis, fracture of vertebra, vertebral tumor, vertebral tuberculosis, severe scoliosis, lumbar spondylolisthesis and osteoporosis;
2. With other systemic pain that may affect the efficacy judgment including fibromyalgia and rheumatoid arthritis;
3. A patient with severe underlying disease not suitable for this research, for example, severe diabetes, metabolic disease, cardiovascular, cerebrovascular, hematopoietic, digestive system, autoimmune diseases, allergic reactions and suffering from malignant tumors;
4. Participation in research that may bring risks, spinal surgery within previous 2 years, for instance;
5. Have obstacles to completing various questionnaires in the study: mental disorder, dementia, visual impairment, hearing disturbance, communication barrier and illiteracy;
6. Other conditions that investigators believe not suitable for enrollment in the trial.
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