Kim, E., Lee, S., Lee, S., Kim, J., Jhun, J., Na, H., … Cho, M. (2018). Metformin ameliorates experimental-obesity-associated autoimmune arthritis by inducing FGF21 expression and brown adipocyte differentiation. Experimental & Molecular Medicine, 50(1), e432. https://doi.org/10.1038/emm.2017.245 (Original work published 2018)