Another study concluded that, while the sickle cell trait among the Rwandan Hutu was comparable to that of neighboring people, it was almost non-existent among Rwandan Tutsi.
Druga studija je zaključila da, premda je prisutnost srpastih stanica crta među Hutuima u Ruandi bila je usporediva s onom susjednih naroda, bila je gotovo nepostojeća među Tutsijima u Ruandi.