1. Department of radiotherapy, Centre Léon Bérard, Lyon, France
2. Department of radiotherapy, Institut de Cancérologie de l’Ouest – Centre René Gauducheau, Saint-Herblain, France
3. Department of radiotherapy, Centre Eugène Marquis, Rennes, France
4. SIREDO oncology center (Care, Innovation and Research for Children, Adolescents and Young Adults with cancer), Institut Curie, PSL university, Paris, France