Increased fetal hemoglobin is seen in:
a. Juvenile CML(Ref: Nelson's 20/e p 2442-2443, Ghai 8/e p 605-607)Increased hemoglobin F for age is a feature of JMML or Juvenile CML.
Juvenile CML
Congenital red cell aplasia
Hereditary spherocytosis
AML
C.V.S.