1. Laboratory of Oncology, Genova, Italy.
2. Pediatric Oncology Unit, Fondazione IRCCS Istituto Nazionale dei Tumori, Milano, Italy.
3. Division of Medical Oncology, Genova, Italy.
4. Laboratory of Pathology, IRCCS G.Gaslini, Genova, Italy.
5. Biologia Generale e Genetica Medica, Università di Pavia, Pavia, Italy.
6. IRCCS C. Mondino, Pavia, Italy.