Funding for this research was provided by:
National Research Council of Science and Technology (2016R1A2B4014999, NRF-2016R1A2B3011980, NRF-2012R1A4A1029061)
Received: 14 September 2019
Accepted: 2 June 2020
First Online: 18 June 2020
Ethics approval and consent to participate
: All animal experiments conformed to the animal welfare guidelines under approved protocols of the Yonsei Institutional Animal Care and Use Committee of Yonsei University, Seoul, Korea. Also, this study was approved by the ethics committee of Yonsei University Severance Hospital (IRB No. 4-2019-0683). All the enrolled patients consent to offer synovial samples and signed written consent.
: We obtained consent for publication from all the individuals whose synovial samples were given in this manuscript.
: The authors declare that they have no competing interests.