1. LPS, Social Psychology Laboratory Aix‐Marseille University Aix‐en‐Provence France
2. Department of Epidemiology and Health Economics AP‐HM Marseille France
3. CEReSS, Research Centre on Health Services and Quality of Life Aix‐Marseille University Marseille France
4. Polyhandicap Federation San Salvadour APHP Hospital Hyères France
5. Methodological Support Unit for Clinical, Epidemiological and Economic Research AP‐HM Marseille France
6. Pediatric Neurology Department APHP, GHUEP, Armand Trousseau Hospital Paris France
7. Department of Pediatric Neurology AP‐HM, Timone Marseille France
8. Committee for Studies Education and Care for People with Polyhandicap (CESAP) Paris France
9. Alice Blum‐Ribes Pediatric Space Establishment of the Unions for the Management of Health Insurance Fund Establishments (UGECAM) Ile de France Group Montreuil France
10. Department of Medical Oncology AP‐HM, Timone Marseille France