M.-C. Lin, H.-R. Guo, M.-C. Lu, H. Livneh, N.-S. Lai, and T.-Y. Tsai, “ Increased risk of depression in patients with rheumatoid arthritis: a seven-year population-based cohort study ”, Clinics, vol. 70, no. 2, pp. 91–96, Feb. 2015, doi: 10.6061/clinics/2015(02)04.