RT Journal Article SR Electronic T1 Study of children of parents operated on for congenital cardiovascular malformations. JF British Heart Journal JO Heart FD BMJ Publishing Group Ltd and British Cardiovascular Society SP 290 OP 293 DO 10.1136/hrt.47.3.290 VO 47 IS 3 A1 Czeizel, A A1 Pornoi, A A1 Péterffy, E A1 Tarcal, E YR 1982 UL http://heart.bmj.com/content/47/3/290.abstract AB The incidence of congenital cardiovascular malformation was studied in 246 children of 166 index patients who had been operated upon for this. Twelve children were affected (4 . 9%). More than half of these had the same malformation as the parent. The incidence of other extracardiac congenital abnormalities did not exceed that recorded in Hungary for the population in general.