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HARVARD Citation
Gossec, L. et al. (2014). A patient-derived and patient-reported outcome measure for assessing psoriatic arthritis: elaboration and preliminary validation of the Psoriatic Arthritis Impact of Disease (PsAID) questionnaire, a 13-country EULAR initiative. Annals of the rheumatic diseases. 73 (6), pp. 1012-1019. [Online].