Öztekin SNS, Sonmez R, Sarsan A, Alkan H. A case of bilateral hip and knee osteonecrosis in a patient with ankylosing spondylitis who used steroids due to immune thrombocytopenic purpura. J Surg Med [Internet]. 2021 Jun. 1 [cited 2024 Apr. 26];5(6):651-3. Available from: https://jsurgmed.com/article/view/799391