Alsaed, Omar, Nawal Hadwan, Izzat Khanjar, and Abdul-Wahab Al-Allaf. “Seronegative Bilateral Symmetrical Inflammatory Polyarthritis: Think Twice Before Starting Immunosuppression”. European Journal of Case Reports in Internal Medicine 5, no. 8 (June 4, 2018). Accessed May 6, 2024. http://ejcrim.com/index.php/EJCRIM/article/view/895.