Incidence of congenital heart disease in Nigerian children.
D001722:Birth Order; D044383:Black People; D002675:Child, Preschool; D005260:Female; D006330:Heart Defects, Congenital / Q000453:epidemiology*; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008297:Male; D008423:Maternal Age; D009549:Nigeria; D012737:Sex Factors