Schmidt, C. O., Kohlmann, T., Pfingsten, M., Lindena, G., Marnitz, U., Pfeifer, K., & Chenot, J. (2016). Construct and predictive validity of the German Örebro questionnaire short form for psychosocial risk factor screening of patients with low back pain. European spine journal, 25(1), S. 325-332. doi:10.1007/s00586-015-4196-3

Schmidt, Carsten Oliver, Thomas Kohlmann, Michael Pfingsten, Gabriele Lindena, Ulf Marnitz, Klaus Pfeifer, and Jean-Francois Chenot. "Construct and Predictive Validity of the German Örebro Questionnaire Short Form for Psychosocial Risk Factor Screening of Patients With Low Back Pain." European Spine Journal 25, no. 1 (2016): S. 325-332.

Schmidt, Carsten Oliver, et al. "Construct and Predictive Validity of the German Örebro Questionnaire Short Form for Psychosocial Risk Factor Screening of Patients With Low Back Pain." European Spine Journal 25.1 (2016): S. 325-332.