The relation between illness perception profiles and self management strategies in a cohort of elderly individuals with knee pain a cross-sectional study based on the Frederiksberg cohort. (April 2021) - Ginnerup-Nielsen, E.; Christensen, R.; Heitmann, B.L.; Altman, R.D.; March, L.; Woolf, A.; Bliddal, H.; Henriksen, M.