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S1
Clinical Chemistry: Theory, Analysis, Correlation. 3rd Edition. Lawrence A. Kaplan and Amadeo J. Pesce, St. Louis, MO. Mosby, 1996.

S2
Clinical Hematology and Fundamentals of Hemostasis. Harmening D, ed. 3rd ed. Philadelphia: F. A. Davis Company; 1997.

S3
Stiene-Martin EA, Lotspeich-Steininger C, Koepke J. Clinical Hematology: Principles, Procedures, and Correlations. 2nd ed. Philadelphia: Lippincott Company; 1998.