Cawley, A., Prior, J., Muller, S., Helliwell, T., Hider, S., Dasgupta, B., …Mallen, C. (2017). Association between characteristics of pain and stiffness and the functional status of patients with incident polymyalgia rheumatica from primary care. Clinical Rheumatology, 37(6), 1639-1644. https://doi.org/10.1007/s10067-017-3730-6