Response to: 'Correspondence to: 'Combination of human umbilical cord mesenchymal stem cell transplantation with IFN-γ treatment synergistically improves the clinical outcomes of patients with rheumatoid arthritis'' by Ma et al
Ann Rheum Dis. 2022 Oct;81(10):e207.
doi: 10.1136/annrheumdis-2020-218762.
Epub 2020 Oct 7.