1. H.E. Solberg, Establishment and use of reference values, in: C.A. Burtis and E.R. Ashwood (Eds.), Tietz Textbook of Clinical Chemistry, Saunders, Philadelphia, PA, 1994, pp. 454-484.
2. Approved Recommendation (1986) on the theory of reference values. Part 1. The concept of reference values;Solberg;J. Clin. Chem. Clin. Biochem.,1987
3. I. Schoen, S.H. Brooks, Judgment based on 95% confidence limits, Stat. Considerations 53 (1969).
4. Laboratory data analysis system: section III—multivariate normality;Grams;Am. J. Clin. Pathol.,1972
5. Statistical aspects of reference values in clinical pathology;Harris;Prog. Clin. Pathol.,1981