Corrections
Screening of newborn infants for cholestatic hepatobiliary = disease with=20 tandem mass spectrometry
BMJ 1999; 319 doi: https://doi.org/10.1136/bmj.319.7219.1253 (Published 06 November 1999) Cite this as: BMJ 1999;319:1253
In this paper by I Mushtaq et al (21 August, pp 471-7) the = x axis=20 in figure 3 should have been labelled 1-specificity.