1 Department of Paediatric Oncology, Justus-Liebig-University Giessen, Giessen, Germany.
2 Department of Paediatric Haematology and Oncology, Royal Hospital for Children and Young People, University of Edinburgh, Edinburgh EH16 4TJ, UK. Electronic address: [email protected].
3 Department of Paediatric Haematology-Oncology, Sorbonne Université and Assistance Publique des Hopitaux de Paris, Hôpital a Trousseau, Paris, France.
4 Department of Nuclear Medicine, University of Leipzig, Leipzig, Germany.
5 Institute for Medical Informatics, Statistics and Epidemiology, University of Leipzig, Leipzig, Germany.