1. World Health Organization. coronavirus disease (COVID-19) pandemic. (2020). Accessed: April 16, 2021: https://www.who.int/emergencies/diseases/novel-coronavirus-2019.
2. Coronavirus vaccine - weekly summary of Yellow Card reporting - UK Government. (2021). Accessed. April 16, 2021: https://www.gov.uk/government/publications/coronavirus-covid-19-vaccine-adverse-reactions/coronavirus-vaccine-summary....
3. New insights in the pathogenesis of autoimmune hemolytic anemia;Barcellini W;Transfus Med Hemother,2015
4. Immune Hematology: Diagnosis and Management of Autoimmune Cytopenias;Despotovic JM,2018
5. Notification of adverse reactions/undesirable effects of medications (Website in Portuguese). (2021). Accessed. April 16, 2021: https://www.infarmed.pt/web/infarmed/submissaoram.