Sickle cell trait and splenic syndrome.
D000531:Altitude; D000755:Anemia, Sickle Cell / Q000150:complications*; D004909:Erythrocyte Indices; D006801:Humans; D012805:Sickle Cell Trait / Q000097:blood / Q000150:complications*; D013158:Splenic Diseases / Q000209:etiology*; D013159:Splenic Infarction / Q000209:etiology; D013577:Syndrome; D013789:Thalassemia / Q000209:etiology