Dilek Durmuş, Fırat Altay, Oğuz Uzun, and Ferhan Cantürk. 2009. “Relation Between Clinical Parameters and Pulmonary Function in Ankylosing Spondylitis”. Archives of Rheumatology 24 (4):178-82. http://www.anadolupsikiyatri.net/index.php/pub/article/view/322.