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2. The incidence of anencephalus in the Fylde peninsula 1956-76 and changes in water hardness;Bound, J.P.; Harvey, P.W.; Brookes, D.M.; BMcA, Sayers;J Epidemiol Community Health,1981
3. Unanswered questions on neural tube defects;Seller, M.J.;BMY,1987
4. 19-year incidence of neural tube defects in an area under constant surveillance;Owens, JR, Harris; F, McAllister; E, West; L.;Lancet,1981
5. Spina bifida-a vanishing nightmare?;Lorber, J.; Ward, A.M.;Arch Dis Child,1985