title: [Distribution of congenital malformations in Yambol District (a preliminary report)].
mesh_terms: D002031:Bulgaria; D000013:Congenital Abnormalities / Q000453:epidemiology*; D005260:Female; D006801:Humans; D007231:Infant, Newborn; D008297:Male
vernacular_title: Razprostranenie na vrodenite malformatsii v Iambolski okrug (predvaritelno suobshtenie).