PhlebotomyBloodlettingBlood Specimen CollectionHemochromatosisSpecimen HandlingIron OverloadPolycythemiaAnemia, NeonatalPolycythemia VeraChelation TherapyFerritinsIronErythropoietinBloodPorphyria Cutanea TardaHematocritPolymerase Chain ReactionPaperSensitivity and SpecificityCerebrospinal Fluid PressureBlood Volume DeterminationAnemiaErythropoiesisHemoglobinsBlood Component TransfusionNitrilotriacetic AcidBacteriological TechniquesInfant, NewbornTime FactorsBlood TransfusionPhenylhydrazines