Coincidental or causal? A case report of acquired thrombotic thrombocytopenic purpura following mRNA-1273 Covid-19 vaccination Erinie M Mekheal; Christopher Millet; Nader Mekheal; Moutaz Ghrewati; Ashesha Mechineni; Michael Maroules;

Anti-PF4 antibodies and their relationship with COVID infection Chieh Yang; Irene Wang; Akshit Chitkara; Jibin Swankutty; Rushin Patel; Samir V Kubba;

Clinical and laboratory profile of patients with positive direct antiglobulin test attended at a university hospital in Goias, Brazil Isadora Cristina Mendes; Pâmela Cristina Gomes Farias de Assis; Raíssa Santos de Almeida; Luma Romeiro Rodrigues de Sousa; Lilian Carla Carneiro; Rosália Santos Amorim Jesuino;