1. Department of Health Sciences and Public Health, Section of Hygiene, Università Cattolica del Sacro Cuore, Rome, Italy
2. School of Economics, Università Cattolica del Sacro Cuore, Rome, Italy
3. Medical Administration, CMO, IEO, European Institute of Oncology, IRCCS, Milan, Italy
4. Medical Direction, IRCCS Regina Elena National Cancer Institute and San Gallicano Institute, Rome, Italy
5. Mediterranean Institute for Transplantation and Advanced Specialized Therapies, Palermo, Italy
6. Medical Direction, CRH Cristo Re Hospital, Rome, Italy
7. Unit of Statistics, National Institute for Public Policies Analysis (INAPP), Rome, Italy