Ahmed SG, Ibrahim UA, Kagu MB, Abjah UA. Does sickle cell trait reduce the frequency of spontaneous bleeds in severe haemophilia? J Haem Pract 2016; 3(2):1–5. doi: 10.17225/ jhp00083).
Kumar M, Herring RA. Rare combination of homozygous sickle cell disease (Hb SS) and haemophilia B in a paediatric patient. Br J Haematol 1997;98:780–1.
Lobo CLC, Nascimento EMD, Jesus LJC, et al. Mortality in children, adolescents and adults with sickle cell anemia in Rio de Janeiro, Brazil. Rev Bras Hematol Hemoter 2018; 40:37–42.