Baseline characteristics 46 children
| *Mean (SD); †49th centile. | |
| Sex | |
| Boys | 28 (61%) |
| Girls | 18 (39%) |
| Birth weight (g)* | 3064 (727.72)† |
| Small for gestational age (<10th centile) | 8 children (17%) |
| Died in utero | 0 |
| Died within 1 year after birth | 3 (6.5%) |
| Recurrence risk of congenital heart disease | 2 (4.3%) |