Anemia, Sickle CellSickle Cell TraitHemoglobin, SickleAntisickling AgentsFetal HemoglobinAnemiaErythrocytes, AbnormalHydroxyureaThalassemiaHemoglobin SC Diseasebeta-ThalassemiaHemoglobinsErythrocyte CountHemoglobin C DiseaseAnemia, HemolyticErythrocytesHemoglobinopathiesalpha-ThalassemiaGlobinsReticulocyte CountBlood TransfusionHemoglobin CHemolysisErythrocyte IndicesErythrocyte AgingHematocritHemoglobins, AbnormalErythrocyte DeformabilityErythrocyte InclusionsReticulocytesLeg UlcerBlood ViscosityAnemia, AplasticExchange Transfusion, Whole BloodNigeriaHemoglobin Agamma-GlobinsErythrocyte AggregationPriapismHemoglobinometryPremarital ExaminationsPainErythrocyte MembraneFanconi AnemiaHemoglobin A2EnuresisReticulocytosisUltrasonography, Doppler, Transcranialdelta-GlobinsCaricaErythrocyte TransfusionAnemia, Hemolytic, AutoimmuneOxygenbeta-GlobinsGlucosephosphate Dehydrogenase DeficiencyErythropoiesisHomozygoteHemoglobinuriaIron OverloadHemorheologyDiphosphoglyceric AcidsHemoglobin E2,3-DiphosphoglycerateAnemia, HypochromicAnemia, MacrocyticAnemia, PerniciousSplenic DiseasesCholelithiasisOximetryOxymetholoneBlood Grouping and CrossmatchingBlood Cell CountErythropoietinInfarctionIronVascular DiseasesHematologic TestsJamaicaAcute Chest SyndromeGlucosephosphate DehydrogenaseStroke