downward-trend of SF(serum ferritin) over previous 6 months after reduction of chelation dose with continuation of regular transfusion regimen. 6 month [clinicaltrials_resource:eb83b7831ecf156c30b701c1e77161d6]

non inferiority of discounting chelation compared with continuing chelation in thalassemia patients with low serum ferritin and/or showing a downward-trend of SF(serum ferritin) over previous 6 months after reduction of chelation dose with continuation of regular transfusion regimen.

downward-trend of SF(serum ferritin) over previous 6 months after reduction of chelation dose with continuation of regular transfusion regimen. 6 month [clinicaltrials_resource:eb83b7831ecf156c30b701c1e77161d6]

non inferiority of discounting chelation compared with continuing chelation in thalassemia patients with low serum ferritin and/or showing a downward-trend of SF(serum ferritin) over previous 6 months after reduction of chelation dose with continuation of regular transfusion regimen.