C. Ibsen, B. Schiøttz-Christensen, H. Melchiorsen, C. Vinther Nielsen, and T. Maribo, “Do Patient-Reported Outcome Measures describe functioning in patients with low back pain, using the Brief International Classification of Functioning, Disability and Health Core Set as a reference?”, JRM, vol. 48, no. 7, pp. 618–624, May 2016.