1. Department of Pediatric Hematology and Oncology La Timone Children’s Hospital, APHM Marseille France
2. Fédération des Équipes Ressources Régionales de Soins Palliatifs Pédiatriques
3. Aix‐Marseille University, EA 3279 CEReSS ‐ Health Service Research and Quality of Life Center Marseille France
4. Department of Medical Information APHM Marseille France