title: [Seasonal birth rate of children with congenital heart defects].
mesh_terms: D003604:Czechoslovakia; D005260:Female; D006330:Heart Defects, Congenital / Q000453:epidemiology*; D006801:Humans; D008297:Male; D012621:Seasons
vernacular_title: Sezónnost narodenia detí s vrodenými srdocovými chybami.