1. Gradual disc prolapse;Adams;Spine,1985
2. Equalization of leg length;Amstutz;Clin Orthop,1978
3. Corticosteroid infiltration of the extradural space;Barry;Am Phys Med,1962
4. The role of abdominal pressure in relieving the pressure on the lumbar intervertebral discs;Bartelink;J Bone Joint Surg,1957
5. A comparison between epidural anaesthesia with and without corticosteroid in the treatment of sciatica;Beliveau;Rheum Phys Med,1971