1. Leukopenia in Negro Workmen;Forbes;Am J Med Sci,1941
2. Pseudoneutropenia in Negroes. A normal phenomenon;Karayalcin;NY State J Med,1972
3. Hematological observations in an East African student population;Shaper;East Afr Med J,1962
4. Leukopenia in Negroes;Brown;N Engl J Med,1966
5. Clinical hematology;Wintrobe,1967