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Costello, RE, Humphreys, JH, Sergeant, JC, Haris, M, Stirling, F, Raza, K, van Schaardenburg, D and Bruce, IN (2021). Additional file 1 of Symptoms in first-degree relatives of patients with rheumatoid arthritis: evaluation of cross-sectional data from the symptoms in persons at risk of rheumatoid arthritis (SPARRA) questionnaire in the PRe-clinical EValuation of Novel Targets in RA (PREVeNT-RA) Cohort. [Data Collection]. Figshare. https://doi.org/10.6084/m9.figshare.15153836.v1