Burn, E., Li, X., Kostka, K., Stewart, H., Reich, C., Seager, S., Duarte-Salles, T., Fernández-Bertolín, S., Aragón, M., Reyes, C., Martinez-Hernandez, E., Marti, E., Delmestri, A., Verhamme, K., Rijnbeek, P., Horban, S., Morales, D. & Prieto-Alhambra, D. 2022, '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', Pharmacoepidemiology and Drug Safety. https://doi.org/10.1002/pds.5419