Finsterbush, Alex, David Amir, Eliahu Vatashki, and Nejah Hussein. “Joint Surgery in Severe Ankylosing Spondylitis”. Acta Orthopaedica 59, no. 5 (January 1, 1988): 491–496. Accessed February 20, 2025. https://actaorthop.org/actao/article/view/22811.