support of a possible association between CNS malformations and fallout from Chernobyl was published by Akar  et al. . in 1988. The Mustafakemalpasa State Hospital,  Bursa  region, covers a population of approximately 90,000. Investigators have documented the prevalence of malformations since 1983. The prevalence  of NTDs was 1.7 to 9.2 per