Deniz Dülgeroğlu, Canan Aybay, Eylem D. G. Kırbıyık, Ayşegül Barlak, and Sumru Özel, “A Case with Seronegative Spondyloarthropathy: Ankylosing Spondylitis or Familial Mediterranean Fever?”, Archives of Rheumatology, vol. 21, no. 2, pp. 076–079, Jun. 2006.