Baseline characteristics of patients with knee and hip osteoarthritis attending the glad program in Denmark, Canada and Australia. A cross-sectional study including 51, 348 patients. Issue 1 (April 2020) - Roos, E.M.; Grønne, D.T.; Davis, A.M.; Zywiel, M.G.; McGlasson, R.; Barton, C.J.; Kepm, J.L.; Crossley, K.M.; Skou, S.T.