Efficacy of baricitinib in patients with moderate-to-severe rheumatoid arthritis with 3 years of treatment: Results from a long-term study - Smolen, JS; Xie, L; Jia, B; Taylor, PC; Burmester, G; Tanaka, Y; Elias, A; Cardoso, A; Ortmann, R; Walls, C; Dougados, M (Rheumatology, 2020)