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van Leeuwen, Lisette M; Mokkink, Lidwine B; Kamm, Christian P.; de Groot, Vincent; van den Berg, Pauline; Ostelo, Raymond W J G; Uitdehaag, Bernard M J (2017). Measurement properties of the Arm Function in Multiple Sclerosis Questionnaire (AMSQ): a study based on Classical Test Theory. Disability and Rehabilitation, 39(20), pp. 2097-2104. Informa Healthcare 10.1080/09638288.2016.1213898
van Hooff, Miranda L; Mannion, Anne F; Staub, Lukas P; Ostelo, Raymond W J G; Fairbank, Jeremy C T (2016). Determination of the Oswestry Disability Index score equivalent to a "satisfactory symptom state" in patients undergoing surgery for degenerative disorders of the lumbar spine-a Spine Tango registry-based study. Spine Journal, 16(10), pp. 1221-1230. Elsevier 10.1016/j.spinee.2016.06.010
