Ann. Rheum. Dis. 1957, 16, 494–502. [Google Scholar] [CrossRef] [Green Version] Felson, D.T.; Niu, J.; Guermazi, A.; Sack, B.; Aliabadi, P. Defining Radiographic Incidence and Progression of Knee Osteoarthritis: Suggested Modifications of the Kellgren and Lawrence Scale. Ann. Rheum...
Ann. Rheum. Dis. 1957, 16, 494–502. [Google Scholar] [CrossRef] [Green Version] Felson, D.T.; Niu, J.; Guermazi, A.; Sack, B.; Aliabadi, P. Defining Radiographic Incidence and Progression of Knee Osteoarthritis: Suggested Modifications of the Kellgren and Lawrence Scale. Ann. Rheum...