References
- Arends J., Høgdall C., Høgdall E. In preparation
- Cotlove E., Harris E. K., Williams G. Z. Biological and analytic components of variation in long-term studies of serum constituents in normal subjects: III. Physiological and medical implications. Clin Chem 1970; 16: 1028–8
- Gowans E. M.S., Fraser C. G., Hyltoft P. Petersen. A guide to the use of probit transformation of Gaussion distributions. Biochim Clin 1989; 13: 327–35
- Hoffmann R. G. Quality control methods. New clinical laboratory standardization methods, R G Hoffmann. Exposition Press, New York 1974; 30–5
- Ministry of the interior. Analysis of the economic consequences of S-AFP screening and ultrasound screening in antenatal care. Statens Seruminstitut, Denmark 1988