| Co-morbidity | Number of patients (%) |
| Bronchodysplasia | 1 (1.8) |
| Cancer | 3 (5.6) |
| Congenital coagulation disorder | 10 (18.5) |
| Congenital heart disease | 4 (7.4) |
| Crohn’s disease | 1 (1.8) |
| Duodenal atresia | 1 (1.8) |
| Former preterm | 1 (1.8) |
| Hepatic failure | 2 (3.7) |
| Hepatoblastoma | 1 (1.8) |
| Hirschprung | 3 (5.6) |
| Intestinal pseudo-occlusion | 2 (3.7) |
| Necrotizing enterocolitis | 4 (7.4) |
| Neurofibromatosis | 2 (3.7) |
| Polymalformation syndrome | 1 (1.8) |
| Polytrauma | 1 (1.8) |
| Pre-term | 2 (3.7) |
| Pre-term + Necrotizing enterocolitis | 2 (3.7) |
| Transplantation | 1 (1.8) |