9Evaluation of the Linearity of Quantitative Measurement Procedures:A statistical Approach, NCCLS. Approved guideline NCCLS document EP6-A [ S ]. Wayne : .PA : NCCLS.2003.
10How to define and determine reference intervals in the clinical laboratory, NCCLS.C28-A2 [S]. Approved guideline. 2 ed, 2000.