Supported motivational interviewing (sumit) to improve physical activity for people with knee osteoarthritis. a pilot, feasibility randomised controlled trial. Issue 5 (May 2023) - Bell, E.C.; O'Halloran, P.; Wallis, J.A.; Crossley, K.M.; Gibbs, A.; Annemarie, L.; Jennings, S.; Barton, C.J.