Chelation TherapyChelating AgentsEdetic AcidIron Chelating AgentsDeferoxamineIron Overloadbeta-ThalassemiaPyridonesLead PoisoningBenzoatesIronSuccimerThalassemiaBlood TransfusionFerritinsLeadTriazolesMercury PoisoningSiderosisDimercaprolHemosiderosisPythiosisLead Poisoning, Nervous System, AdultErythrocyte TransfusionSiderophoresMyelodysplastic SyndromesComplementary Therapies