Wagan, A. A., A. Raheem, A. Bhatti, and T. Zafar. “Fatigue Assessment by FACIT-F Scale in Pakistani cohort With Rheumatoid Arthritis (FAF-RA) Study”. Pakistan Journal of Medical Sciences, Vol. 37, no. 4, May 2021, doi:10.12669/pjms.37.4.3602.