Frikha, Faten, Sameh Ellouz, Moez Trigui, Makram Frigui, Tahia Boudawara, and Zouhir Bahloul. “Large Elbow Nodules in a Patient With Rheumatoid Nodulosis”. Rheumatology Reports 2, no. 1 (September 29, 2010): e4. Accessed August 3, 2020. https://www.pagepress.org/journals/index.php/rr/article/view/rr.2010.e4.