[Decrease in the rate of anencephaly in Czechoslovakia, 1961-1975].
D000328:Adult; D000368:Aged; D000757:Anencephaly / Q000453:epidemiology*; D003604:Czechoslovakia; D005260:Female; D006801:Humans; D008875:Middle Aged
Pokles cetnosti anencefalie v CSR 1961-1975.