“Safety warning for ChAdOx1 nCov-19 vaccine in patients with sickle cell disease : Astra Zeneca vaccine in Sickle cell disease (SCD) ”, Mediterr J Hematol Infect Dis, vol. 13, no. 1, p. e2021059, Sep. 2021, doi: 10.4084/MJHID.2021.059.