POS0391 THE MSQUASH AS MEASUREMENT TOOL FOR DAILY PHYSICAL ACTIVITY: TRANSLATION AND CROSS-CULTURAL ADAPTATION INTO ENGLISH, FIELD-TESTING IN DIFFERENT RHEUMATIC DISEASES AND CLINICAL VALIDATION IN PATIENTS WITH AXIAL SPONDYLOARTHRITIS.
Y.M. Van der Kraan, L.S. Gensler, D. Paap, E. Thovmasyan, N.S. Ausma, H. Kokol, M. Carbo, K. De Leeuw, K. Van der Geest, H. Bootsma, J.P.L. Spoorenberg, S. Arends
