3Vonberg RP,Wolter A,Chaberny IF,et al.Epidemiology of multidrug-resistant gram-negative bacteria:data from an university hospital over a 36-month period.Int J Hyg Environ Health,2008,211:251-257.
8International Oorganization for Standardization. General requirements for the competence of testing and calibration laboratories. ISO/IEC17025. Geneva, 1999.
9NATA Technical Note #33. Guidelines for estimating and reporting measurement uncertainty of chemical test results. [S/OL] NATA, 2009-12-24 [ 2010-03-08 ]. http:// www. Nata. asn. au/ publications/category/9 -nata-technical-notes.
10The National Committee for Clinical Laboratory Standards. EPg-A2 Method comparison and bias estimation using patient samples. Approved Guideline. 2nd ed. Wayne PA : NCCLS. 2002.