Lindh, M, M Lurie, and H. Sanne. 1997. “A Randomized Prospective Study of Vocational Outcome in Rehabilitation of Patients With Non-Specific Musculoskeletal Pain: A Multidisciplinary Approach to Patients Identified After 90 Days of Sick-Leave”. Journal of Rehabilitation Medicine 29 (2):103-12. https://doi.org/10.2340/165019771997103112.