1. Department of Pathology, Sorbonne Université Assistance Publique Hôpitaux de Paris, Hôpital Armand Trousseau Paris France
2. Department of Diagnostic Pathology and Laboratory Medicine Fondazione IRCCS Istituto Nazionale dei Tumori Milan Italy
3. Unit of Pathology Azienda Ospedaliera Specialistica dei Colli Monaldi‐Cotugno‐CTO Naples Italy
4. Service de Génétique des tumeurs, Département de Pathologie Institut Gustave Roussy Villejuif France
5. Department of Pathology Rennes University Hospital Rennes France
6. Service d'Oncologie Médicale Institut de Cancérologie de Strasbourg Strasbourg France
7. Pediatric Oncology Unit Fondazione IRCCS Istituto Nazionale dei Tumori Milan Italy
8. Department of Pediatric Oncology Hôpital d'enfants de la Timone Marseille France
9. Princess Máxima Center for Pediatric Oncology, and Utrecht University Utrecht the Netherlands
10. Department of Pathology Sidra Medicine/Weill Cornell Medicine Doha Qatar
11. Soft Tissue and Bone Pathology and Pediatric Pathology Unit Fondazione IRCCS Istituto Nazionale dei Tumori Milan Italy
12. Sorbonne Université, Assistance Publique Hôpitaux de Paris, Hôpital Armand Trousseau Paris France