Jensen, R, Christensen, A F, Hartlev, L B, Thomsen, J S, Boel, L W T, Laursen, M, Revald, P H, Varnum, C, Keller, K K & Hauge, E M 2022, ' Calcified cartilage differs in patients with end-stage primary osteoarthritis and secondary osteoarthritis due to rheumatoid arthritis of the hip joint ', Scandinavian Journal of Rheumatology, vol. 51, no. 6, pp. 441-451 . https://doi.org/10.1080/03009742.2021.1952754 Jensen, R K, Christensen, A F, Hartlev, L B, Thomsen, J S, Boel, L W T, Laursen, M B, Revald, P, Varnum, C, Keller, K K & Hauge, E M 2022, ' Calcified cartilage differs in patients with end-stage primary osteoarthritis and secondary osteoarthritis due to rheumatoid arthritis of the hip joint ', Scandinavian Journal of Rheumatology, vol. 51, no. 6, pp. 441-451 . https://doi.org/10.1080/03009742.2021.1952754