title: Lumbar disc herniation. A prospective study of prognostic factors including a controlled trial. Part I.
mesh_terms: D000328:Adult; D000367:Age Factors; D000368:Aged; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007405:Intervertebral Disc Displacement / Q000175:diagnosis / Q000453:epidemiology* / Q000601:surgery; D008159:Lumbar Vertebrae; D008297:Male; D008722:Methods; D008875:Middle Aged; D009664:Norway; D011379:Prognosis; D011446:Prospective Studies; D012737:Sex Factors; D014938:Work Capacity Evaluation