Andjelkov, N.
Riyadh, H.
Ivarsson, M.
Kacarevic-Popovic, Z.
Krstic, J.
Wretenberg, P.
Article History
Received: 27 October 2020
Accepted: 18 January 2021
First Online: 18 February 2021
Ethics approval and consent to participate
: The Regional Ethical Review Board in Uppsala, at Uppsala University has approved the study, and informed consent was obtained from all the patients donating their cartilage and bone specimens for the study. The number of ethics approval is 2009/092.
: The authors declare that they have no conflict of interests.