title: Hypohaptoglobinemia in rural and urban populations of Bahia state, Brazil.
mesh_terms: D044383:Black People; D001938:Brazil; D004777:Environment; D005787:Gene Frequency; D006242:Haptoglobins / Q000172:deficiency*; D006801:Humans; D012424:Rural Population; D014505:Urban Population
chemical_list: D006242:Haptoglobins