[Prevention of congenital anomaly--in the early stage of embryological development].
D002869:Chromosome Aberrations; D025063:Chromosome Disorders; D000013:Congenital Abnormalities / Q000196:embryology* / Q000209:etiology / Q000517:prevention & control*; D004622:Embryo, Mammalian / Q000187:drug effects / Q000528:radiation effects; D004777:Environment; D005260:Female; D005315:Fetal Diseases; D030342:Genetic Diseases, Inborn; D006801:Humans; D007239:Infections; D011247:Pregnancy; D011830:Radiation Effects