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Spinal Stenosis
Intervertebral Disk Displacement
Sciatica
Spondylolisthesis
Nerve Compression Syndromes
Back Pain
Lumbar Vertebrae
Spinal Nerve Roots
Intervertebral Disk
Chymopapain
Intervertebral Disk Chemolysis
Spinal Fusion
Laminectomy
X Ray Computed Tomography
Reoperation
Myelography
Retrospective Studies
Treatment Outcome
Risk Factors
Multivariate Analysis
Co-Publications
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