1. Folic acid, pernicious anaemia and prevention of neural tube defects;Wald, N.J.; Bower, C.B.;Lancet,1994
2. Assessing the human condition: capturerecapture techniques allow accurate counts of those difficult to reach populations;Laporte, R.E.;BMJ,1994
3. Use of local neural tube defect registers to interpret national trends;Hey, K.; O'Donnell, M.; Murphy, M.; Jones, N.; Botting, B.;Arch Dis Child,1994
4. Prevalence ofneural tube defects in South Australia 1966-91: effectiveness and impact of prenatal diagnosis;Chan, A.; Robertson, E.F.; Haan, E.A.; Keane, R.J.; Ranieri, E.; Carney, A.;BMJ,1993
5. Homocysteine metabolism in pregnancies complicated by neural tube defects;Mills, J.L.; McPartlin, J.M.; Kirke, P.N.; Lee, Y.J.; Conley, M.R.; Weir, D.G.;Lancet,1995