Williams M D, Shinton N K, Finney R D
Clin Lab Haematol. 1985;7(2):113-8. doi: 10.1111/j.1365-2257.1985.tb00014.x.
Three patients who presented with primary acquired sideroblastic anaemia (PASA) later developed myelofibrosis (MF). As both are clonal disorders a second mutation is suggested.