Sickling in Zanzibar island--its incidence, regional variation, and relationship with splenomegaly rates.
D000755:Anemia, Sickle Cell / Q000150:complications / Q000453:epidemiology*; D002648:Child; D005006:Ethnicity; D005260:Female; D006801:Humans; D008297:Male; D013163:Splenomegaly / Q000150:complications / Q000453:epidemiology*; D013636:Tanzania