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APA Citation
Lanyon, P., O'Reilly, S., Jones, A., & Doherty, M. (1998). radiographic assessment of symptomatic knee osteoarthritis in the community: definitions and normal joint space. Annals of the rheumatic diseases, 57(10), 595–601. http://access.bl.uk/ark:/81055/vdc_100151251869.0x00004b