Sag, Sinem, Kemal Nas, Mustafa Serdar Sag, Ibrahim Tekeoglu, Ayhan Kamanli, and Aysenur Aydeniz. “Evaluating Loss of Productivity in Patients With Rheumatoid Arthritis and Its Relationship to Clinical Parameters”. Annals of Medical Research 25, no. 3 (May 25, 2021): 0438–0444. Accessed May 16, 2022. https://annalsmedres.org/index.php/aomr/article/view/1459.