KEPEKÇİ, Yalçın, Can BOĞA, Mustafa DEMİRTAŞ, and Osman UÇARER. “Echocardiographic and Electrocardiographic Abnormalities in Ankylosing Spondylitis”. European Journal of Therapeutics 3, no. 2 (June 1, 1992): 149–154. Accessed April 4, 2025. https://eurjther.com/index.php/home/article/view/1033.