Chemonucleolysis v. disc surgery.
D000328:Adult; D002917:Chymopapain / Q000627:therapeutic use*; D010450:Endopeptidases / Q000627:therapeutic use*; D006801:Humans; D007403:Intervertebral Disc / Q000187:drug effects*; D008159:Lumbar Vertebrae / Q000601:surgery*; D013122:Spinal Diseases / Q000601:surgery*
D010450:Endopeptidases; D002917:Chymopapain