van Tulder, M W Spinal radiographic findings and nonspecific low back pain. A systematic review of observational studies. [electronic resource] - Spine Feb 1997 - 427-34 p. digital Publication Type: Journal Article; Review; Systematic Review ISSN: 0362-2436 Standard No.: 10.1097/00007632-199702150-00015 doi Subjects--Topical Terms: Evaluation Studies as TopicHumansLow Back Pain--diagnostic imagingOdds RatioRadiographyResearch DesignSpine--diagnostic imaging