in the population of live born children in the county of vestfold , norway , during the seven-year period 1982-88 ( n = 15,307 ) , 138 cases of congenital heart defects were diagnosed ( patent ductus arteriosus in preterm infants excluded ) , an incidence of 0.9 % .
C0018798
congenital heart
C0013274
patent ductus arteriosus