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Schiphorst Preuper, H. R., M. F. Reneman, A. M. Boonstra, P. U. Dijkstra, G. J. Versteegen, J. H. B. Geertzen, and S. Brouwer. Relationship between Psychological Factors and Performance-based and Self-reported Disability in Chronic Low Back Pain. Springer-Verlag, 2008.

Schiphorst Preuper, H. R., et al. Relationship between Psychological Factors and Performance-based and Self-reported Disability in Chronic Low Back Pain. Springer-Verlag, 2008.