Clinical details of the children
| Variable | Mean (SD; range) |
| Age (years) | 10.6 (1.4; 8.4 to 13.2) |
| Body surface area (m2) | 1.2 (0.2; 0.9 to 1.6) |
| Weight (kg) | 37.0 (9.7; 22.0 to 59.8) |
| Height (cm) | 142.7 (8.5; 126.7 to 159.0) |
| Systolic blood pressure (mm Hg) | 106 (6.4; 95 to 124) |
| Diastolic blood pressure (mm Hg) | 63 (6.0; 51 to 78) |
| Heart rate (beats/min) | |
| Echocardiography | 76 (9.6; 55 to 96) |
| MRI | 80 (10.8; 55 to 100) |
| Pubertal status (Tanner) | |
| M (girls) | M1 (M1 to M3) |
| G (boys) | G1 (G1 to G3) |
| Sex (male/female) | 15/15 |