References
- International Federation of Clinical Chemistry, Expert Panel on Theory of Reference Values. Approved recommendation (1986) on the theory of reference values. Part 1. The concept of reference values. J Clin Chem Clin Biochem 1987; 25: 337–342
- Solberg HE. Multivariate reference regions. Scan J Clin Lab Invest 1995; 55: 3–5, Suppl 222
- Harris EK. Effects of intra- and interindividual variation on the appropriate use of normal ranges. Clin Chem 1974; 20: 1535–1542
- Winkel P. The use of the subject as his own referent. Reference Values in Laboratory Medicine, R Gräbeck, T. Alström. John Wiley & Sons, ChichesterUK 1981; 65–78
- Harris EK, Boyd JC. On dividing reference data into subgroups to produce separate reference ranges. Clin Chem 1990; 36: 265–270
- Harris EK. Some theory of reference values. II. Comparison of some statistical models of intraindividual variation in blood constituents. Clin Chem 1976; 22: 1343–1350