Carmody, Sean, Haruhito Aoki, Ozgur Kilic, Mario Maas, Andrew Massey, Gino Kerkhoffs, and Vincent Gouttebarge. 2022. “Osteoarthritic Changes in the Knees of Recently Retired Male Professional Footballers: A Pilot Study”. South African Journal of Sports Medicine 34 (1). https://doi.org/10.17159/2078-516X/2022/v34i1a12816.