Deterioration of vaccine‐induced immune thrombotic thrombocytopenia treated by heparin and platelet transfusion: Insight from functional cytometry and serotonin release assay oleh Alice Bérezné, David Bougon, Florence Blanc‐Jouvan, Nicolas Gendron, Cecile Janssen, Michel Muller, Sébastien Bertil, Florence Desvard, Isabelle Presot, Benjamin Terrier, Richard Chocron, Olivier Sanchez, Dominique Helley, David M. Smadja