1. Units of Internal Medicine and Endocrinology, University of Pavia, Pavia, Italy.
2. Units of Pathology and Cytology, Fondazione Salvatore Maugeri IRCCS, University of Pavia, Pavia, Italy.
3. Clinical Oncology, University of Pavia Medical School, Pavia, Italy.
4. Medical Oncology, University of Pavia, Pavia, Italy.
5. Department of General and Mininvasive Surgery, Fondazione Salvatore Maugeri IRCCS, University of Pavia, Pavia, Italy.