Significance of changing vs. stable pre-radiographic MRI lesions in persons at higher risk for knee osteoarthritis. (April 2015) - Sharma, L.; Jackson, R.; Almagor, O.; Roemer, F.; Guermazi, A.; Crema, M.; Nevitt, M.C.; Hochberg, M.; Kwoh, K.; Eaton, C.B.; Bathon, J.; Chmiel, J.S.