1. Bunn HF. Anemia. In: Petersdorf RG, Adams RD, Braunwald E, Isselbacher KJ, Martin JB, Wilson JD, eds. Harrison’s principles of internal medicine, 10th ed. New York: McGraw-Hill, 1983:289.
2. Spivak JL. The anemic patient. In: Harvey AMcG, Johns RJ, McKusick VA, Owens AH, Ross RS, eds. The principles and practice of medicine. 21st ed. Norwalk, Connecticut: Appleton-Century-Crofts, 1984:469.
3. Wintrobe MW. The approach to diagnosis and therapy of anemia. In: Wintrobe MW, et al., eds. Clinical hematology. 8th ed. Philadelphia: Lea and Febiger, 1981:4.
4. Williams WJ. In: Hematology. 3rd ed. New York: McGraw-Hill, 1983:22.
5. Kiett AS. Introduction to the anemias. In: Wyngaarden JB, Smith LH, eds. Cecil textbook of medicine. 17th ed. Philadelphia: WB Saunders, 1985:876.