HemoglobinsAnemiaHemoglobin AHemoglobins, AbnormalFetal HemoglobinHemoglobinometryHematinicsErythropoietinHemoglobin, SickleHemoglobin A, GlycosylatedHemoglobin CHemoglobin EOxyhemoglobinsAnemia, Sickle CellHemoglobin A2HematocritBlood TransfusionIronAnemia, Iron-DeficiencyAnemia, HypochromicHemoglobinopathiesErythrocyte CountErythrocyte IndicesMethemoglobinRenal DialysisErythrocyte TransfusionTruncated HemoglobinsThalassemiaFerritinsErythrocytesPregnancy Complications, HematologicReticulocyte CountKidney Failure, ChronicCarboxyhemoglobinbeta-ThalassemiaOxygenAntisickling AgentsTreatment OutcomeSickle Cell TraitRetrospective StudiesGlobinsHemoglobin C DiseaseErythropoiesisRecombinant ProteinsProspective StudiesBlood SubstitutesHemoglobin JPallorBlood Cell Countalpha-ThalassemiaHemoglobin SC DiseaseHemoglobin HDiphosphoglyceric AcidsBlood Transfusion, AutologousPolycythemiaTime FactorsRisk FactorsFollow-Up StudiesFerrous CompoundsHemolysis2,3-DiphosphoglyceratePrognosisDiabetes Mellitus, Type 2Cohort StudiesHematologic TestsBlood Loss, SurgicalHemeAnemia, HemolyticBlood GlucoseDiabetes MellitusDonor SelectionPrevalencePhlebotomyAnemia, NeonatalIron, DietaryBiological MarkersInjections, SubcutaneousNutritional StatusHydroxyureaAngiodysplasiaBloodless Medical and Surgical ProceduresHypoglycemic AgentsSeverity of Illness IndexPlatelet CountCross-Sectional StudiesJehovah's WitnessesBlood Chemical AnalysisRegression AnalysisTibetKidney DiseasesDrug Administration ScheduleMultivariate AnalysisCarbon MonoxideAnemia, MacrocyticGlucaric AcidRenal Insufficiency, ChronicChronic DiseaseHookworm InfectionsDiabetes Mellitus, Type 1Altitude