Government regulations and sickle cell trait.
D000755:Anemia, Sickle Cell / Q000097:blood*; D006451:Hemoglobin, Sickle / Q000032:analysis; D006801:Humans; D007878:Legislation as Topic; D008887:Military Medicine; D012805:Sickle Cell Trait / Q000097:blood*
D006451:Hemoglobin, Sickle