Long-term persistence of high anti-PF4 antibodies titer in a challenging case of AZD1222 vaccine-induced thrombotic thrombocytopenia. Bleeding Thromb Vascul Biol [Internet]. 2023 Jun. 28 [cited 2025 May 9];2(2). Available from: https://www.btvb.org/btvb/article/view/72