Cartilage structure and knee function in subjects with and without presence of MRI-diagnosed cartilage damage, and without risk factors of knee osteoarthritis - A 4-year longitudinal study using data from the osteoarthritis initiative. Issue 1 (April 2020) - Lapper, A.; Wisser, A.; Roemer, F.; Maschek, S.; Wirth, W.; Duda, G.; Eckstein, F.