1. Melanoma Medical Oncology Unit, Department of Medical Oncology and Hematology; Fondazione IRCCS Istituto Nazionale Tumori; Milan Italy
2. Department of Pediatric Hematology and Oncology; University of Tubingen; Tubingen Germany
3. Department of Pediatric Oncology; King Hussein Cancer Center; Amman Jordan
4. Unit of Hereditary Digestive Tract Tumours; Fondazione IRCCS Istituto Nazionale Tumori; Milan Italy
5. Pediatric Oncology Unit; Fondazione IRCCS Istituto Nazionale Tumori; Milan Italy