1. Second Report of the UK Collaborative Study on Alphafetoprotein in relation to Neural Tube Defects. Amniotic fluid alpha-fetoprotein measurement in antenatal diagnosis of anencephaly and open spina bifida in early pregnancy;Laticet,1979
2. Diagnosis of fetal abnormalities by ultrasound;Nicolaides, K.H.; Campbell, S.,1986
3. The prenatal diagnosis of neural tube and other congenital defects;Milunsky, A.;Lancet; Getelic disorders atnd the fetus,1986
4. Quantitative estimation of the density ratios of cholinesterase bands in human amniotic fluids;Peat, D.; Brock, D.J.H.;Clin Chim Acta,1984
5. Prenatal diagnosis of neural-tube defects with a monoclonal antibody specific for acetylcholinesterase;Brock, D.J.H.; Barron, L.; van Heyningen, V.;Lancet