Pollock, J., Hehir, M., Mitchell, K., Kirwan, J. R., Hewlett, S., Pollock, J., …Bennett, B. (2003). Clinical and psychological outcome from a randomized controlled trial of patient-initiated direct-access hospital follow-up for rheumatoid arthritis extended to 4 years. Rheumatology, 42(3), 422-426. https://doi.org/10.1093/rheumatology/keg130