1. Anencephaly in the United Kingdom and Republic of Ireland;Kirke, P.N.; Elwood, J.H.;BMJ,1984
2. Anencephaly in the Netherlands: a remarkable decline;Romijn, J.A.; Treffers, P.E.;Lancet,1983
3. Time trends of spina bifida in Sweden 1947-81;Kallen, B.; Lofkvist, E.;JEpidemiol Community Health,1984
4. Spina bifida and anencephaly;Czeizel, A.;BMJ,1983
5. Is myelomeningocoele a disappearing disease?;Stein, S.C.; Feldman, J.G.; Friedlander, M.; Klein, R.J.;Paediatrics,1982