1. Department of Clinical Sciences and Community Health Università degli Studi di Milano Milan Italy
2. Department of Pathophysiology and Transplantation Università degli Studi di Milano Milan Italy
3. Stony Brook Cancer Center Stony Brook University Stony Brook New York
4. Department of Medical and Surgical Sciences University of Bologna Bologna Italy
5. Department of Collective Health Faculdade de Ciências Médicas da Santa Casa de São Paulo São Paulo Brazil
6. Department of Pediatric Oncology Hospital Santa Marcelina/TUCCA São Paulo Brazil
7. Department of Epidemiology and Health Services Research Centre for Primary Care and Public Health (Unisanté) University of Lausanne Lausanne Switzerland
8. Department of Biomedical and Clinical Sciences L. Sacco Università degli Studi di Milano Milan Italy