References
- Verdier C-H, Groth T. Desirable analytical quality specifications for clinical chemistry laboratories. Clin Chem 1994; 40: 168–169
- Olafsdottir E, Aronsson T, Groth T, Verdier C-H. Transferability of clinical laboratory data within a health care region. Scand J Clin Lab Invest 1992; 52: 679–687
- IFCC, ICHS: Approved recommendation on the theory of reference values. Part 5. Statistical treatment of collected reference values. Determination of reference limits. J Clin Chem Clin Biochem 1987; 25: 645–656
- Koivula T, Ratalahti H, Kairisto V, Hatanpää K, Nordberg U-R, Näntä V, Penttilä I, Ruostesuo J, Uotila L. Ulkoinen viitearvojen laaduntarkkailu-järjestelmä kokeilussa. Moodi 1994; 18: 256–261
- Groth T. Internal and external quality assurance. Scand J CIin Lab Invest49 suppl 1989; 193: 87–94
- Kouri T, Kairisto V, Virtanen A, Uusipaikka E, Rajamäki A, Finneman H, Juva K, Koivula T, Näntö V. Reference intervals from hospitalized patients: A computerized method based on combination of laboratory and diagnostic data. Clin Chem 1994; 40: 2209–2215