RT Journal Article SR Electronic T1 Low Back Pain and Sciatica Due to Protrusion of Intervertebral Discs JF Cleveland Clinic Journal of Medicine JO Cleve Clin J Med FD Cleveland Clinic SP 228 OP 235 VO 5 IS 4 A1 Kendrick, J. I. A1 Bunts, A. T. YR 1938 UL http://www.ccjm.org/content/5/4/228.abstract AB