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Ferritin levels in 52 TDT patients with hypothyroidism in 25 splenectomized (o) and 27 non-splenectomized (●) patients at diagnosis of HT (A) and at last ferritin assessment (B) Iron load grading: mild < 1000 μg/l; moderate 1000–2500; and severe >2500 μg/l.
