Anemia, Sickle CellSickle Cell TraitHemoglobin, SickleErythrocytes, AbnormalAntisickling AgentsHemoglobin SC DiseaseFetal HemoglobinThalassemiaHydroxyureaErythrocytesHemoglobin APriapismbeta-ThalassemiaHemoglobinopathiesJamaicaHemoglobin C DiseaseAcute Chest SyndromeHemoglobinsalpha-ThalassemiaErythrocyte DeformabilityHemolysisHemoglobins, AbnormalErythrocyte MembraneHemoglobin CGlobinsLeg UlcerBlood TransfusionExchange Transfusion, Whole BloodReticulocyte CountErythrocyte AggregationOxyhemoglobinsReticulocytesErythrocyte AgingPainSplenic InfarctionVascular DiseasesHemorheologyErythrocyte IndicesLutheran Blood-Group SystemOxygenBlood Viscosity2,3-DiphosphoglycerateHomozygoteErythrocyte Transfusionbeta-Globinsgamma-GlobinsDimethyl AdipimidateRetinal DiseasesHematocritCell AdhesionRheologyNigeriaMethemoglobinKidney Papillary NecrosisSplenic DiseasesNeonatal ScreeningHemoglobin A2CarboxyhemoglobinHyphemaDiphosphoglyceric AcidsPremarital Examinations