Rayner, F., Anderson, A. E., Baker, K. F., Buckley, C. D., Dyke, B., Fenton, S., Filer, A., Goodyear, C. S., Hilkens, C. M., Hiu, S., Kerrigan, S., Kurowska-Stolarska, M., Matthews, F., McInnes, I., Ng, W. F., Pratt, A. G., Prichard, J., Raza, K., Siebert, S., Stocken, D., …Isaacs, J. D. (2021). BIOlogical Factors that Limit sustAined Remission in rhEumatoid arthritis (the BIO-FLARE study): protocol for a non-randomised longitudinal cohort study. BMC Rheumatology, 5(1), Article 22. https://doi.org/10.1186/s41927-021-00194-3