The incidence of<unk>  is 0.6-2.5/100,000 per year, the median age at onset is 65–70 years and it is more frequent in females than in males. The incidence in children is 0.09/100,000 per year.
Essential thrombocythemia
Refractory cytopenia of childhood
Polycythemia vera
Transient erythroblastopenia of childhood
Primary myelofibrosis
Chronic neutrophilic leukemia
Drug-induced thrombocytopenic purpura
Aplastic anemia