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2. Possible causal heterogeneity in spina bifida cystica;Toriello, H.V.; Higgins, J.V.;Am J Med Geniet,1985
3. Adjusting recurrence risks for neural tube defects based on BC data;Hall, J.G.; Keena, B.A.;Am J Hum Genet; Normal and abnormal development of the human nervous svstem,1986
4. Epidemiological studies of neural tube defects in Newfoundland. Teratology 1987: 36: 355-61. " Fraser FC, Frecker M, Allderdice P. Seasonal variation of neural tube defects in Newfoundland and elsewhere;Frecker, M.F.; Fraser, F.C.;Teratology,1986
5. Sib risks of anencephaly and spina bifida in British Columbia;McBride, M.L.;Am J Med Genet,1979