Ivanova, Alexandrina, Viktoria Kotseva, Neli Koleva, Diyan Genov, Julian Ananiev, Ivana Kalinkova, Atanas Kundurdjiev, Cvetelina Marinova, and Milena Nikolova. “Ankylosing Spondylitis – a Rare Cause of AA Amyloidosis With Renal and Cardiovascular Alterations”. Rheumatology (Bulgaria) 32, no. 2 (December 22, 2024): 60–65. Accessed September 9, 2026. https://www.rheumatologybg.org/journal/rbj/article/view/30.