The Western Ontario and McMasters Universities Osteoarthritis Index (WOMAC) – Theoretical Framework, Psychometric Properties and Appropriateness for Measurement of Function and Health in Trauma Population - Bak, P.; Lohsträter, A.; Müller, W.-D.; Bocker, B.; Smolenski, U. C. (Physikalische Medizin, Rehabilitationsmedizin, Kurortmedizin, 2008)