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APA Citation
Pickles, T., Horton, M., Christensen, K. B., Phillips, R., Gillespie, D., Macefield, R., Aiyegbusi, O. L., Beecher, C., & Choy, E. (n.d.). p089 Patient-reported outcome measures for rheumatoid arthritis disease activity: a systematic review following COSMIN guidelines. Rheumatology, 61, . http://access.bl.uk/ark:/81055/vdc_100153791917.0x000017