Deniz Dülgeroğlu, Canan Aybay, Eylem D. G. Kırbıyık, Ayşegül Barlak, and Sumru Özel. 2006. “A Case With Seronegative Spondyloarthropathy: Ankylosing Spondylitis or Familial Mediterranean Fever?”. Archives of Rheumatology 21 (2):076-079. http://anadolupsikiyatri.net/index.php/pub/article/view/198.