“PO04 | Classification Criteria for Antiphospholipid Syndrome: ACR EULAR 2023 Versus Sydney 2006 – A Monocentric and Retrospective Study: S. Suardi*, A. Marino*, J. Croce, F. Maiolini, E. Tinazzi, S. Moruzzi, L. Delfino, F. Pizzolo, E. Bassanello, G. Marcassa, C. Spillere, S. Friso, N. Martinelli | *the Two Authors Equally Contributed to the Work and Share the First Authorship; Department of Medicine, Section of Internal Medicine, University of Verona, Italy”. 2025. Bleeding, Thrombosis and Vascular Biology 4 (s1). https://doi.org/10.4081/btvb.2025.266.