1. Pediatric surgery department; Necker Enfants Malades Hospital; Paris Descartes University; Paris France
2. Radiology department; Curie institute; Paris France
3. Pediatric Oncology department; Gustave- Roussy Institute; Paris France
4. Pediatric Oncology department; Curie institute; Paris France
5. Pathology department; Necker Enfants Malades Hospital; Paris Descartes University; Paris France
6. Biostatistics department; Necker Enfants Malades Hospital; Paris Descartes University; Paris France
7. Radiology department; Gustave-Roussy Institute; Paris France