Letter: Chemonucleolysis: an appeal for objectivity.
D002917:Chymopapain / Q000627:therapeutic use*; D004341:Drug Evaluation; D010450:Endopeptidases / Q000627:therapeutic use*; D006801:Humans; D007405:Intervertebral Disc Displacement / Q000188:drug therapy*; D012107:Research Design
D010450:Endopeptidases; D002917:Chymopapain