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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. Bleeding Thromb Vasc Biol [Internet]. 2025 Oct. 22 [cited 2026 May 1];4(s1). Available from: https://www.btvb.org/btvb/article/view/266