A brief physiotherapist-led behaviour-change intervention to facilitate walking in older people with peripheral arterial disease: development of a protocol for a randomized controlled trial. - Holmes, M. N. Galea; Weinman, J. A.; Peacock, J.; Eddy, S.; Modarai, B.; Patel, S.; Fisher, G.; Sackley, C.; Bearne, L. M. (Clinical Rehabilitation, 2018)