title: Sickle cell problems. Introduction.
mesh_terms: D000755:Anemia, Sickle Cell / Q000453:epidemiology / Q000235:genetics; D004641:Emigration and Immigration; D006444:Hemoglobin C; D006451:Hemoglobin, Sickle; D006579:Heterozygote; D006720:Homozygote; D006113:United Kingdom
chemical_list: D006451:Hemoglobin, Sickle; D006444:Hemoglobin C