Hewlett, S., Ambler, N., Almeida, C., Cliss, A., Hammond, A., Kitchen, K., …Pollock, J. (2011). Self-management of fatigue in rheumatoid arthritis: a randomised controlled trial of group cognitive-behavioural therapy. Annals of the Rheumatic Diseases, 70(6), 1060-1067. https://doi.org/10.1136/ard.2010.144691