BarnettR. N.Medical significance of laboratory results. Amer. J. clin. Path.50 (1968) 671.
2.
BroughtonP. M. G.AnnanW.Unpublished data. Campbell, D. G., Annan, W. Precision of plasma urea and electrolytes estimated by the AutoAnalyzer. J. clin. Path.19 (1966)513.
GowenlockA. H.BroughtonP. M. G.The influence of accuracy and precision on the normal range and on acceptable limits for an analytical result. Z. anal. Chem.243 (1968) 774.
5.
TonksD. B.A study of the accuracy and precision of clinical chemistry determinations in 170 Canadian laboratories. Clin. Chem.9 (1963) 217.
6.
TonksD. B.A dual programme of quality control for clinical chemistry laboratories, with a discussion of allowable limits of error. Z. anal. Chem.243 (1968) 760.