Background rates of five thrombosis with thrombocytopenia syndromes of special interest for COVID-19 vaccine safety surveillance: Incidence between 2017 and 2019 and patient profiles from 38.6 million people in six European countries.
Burn E., Li X., Kostka K., Stewart HM., Reich C., Seager S., Duarte-Salles T., Fernandez-Bertolin S., Aragón M., Reyes C., Martinez-Hernandez E., Marti E., Delmestri A., Verhamme K., Rijnbeek P., Horban S., Morales DR., Prieto-Alhambra D.