Frikha, F., S. Ellouz, M. Trigui, M. Frigui, T. Boudawara, and Z. Bahloul. “Large Elbow Nodules in a Patient With Rheumatoid Nodulosis”. Rheumatology Reports, Vol. 2, no. 1, Sept. 2010, p. e4, doi:10.4081/rr.2010.e4.