1. Epidemiology and Biostatistics Unit, National Cancer Institute‑IRCCS Fondazione G. Pascale, I‑80131 Naples, Italy
2. Medical Oncology Unit, Cannizzaro Hospital, I‑95126 Catania, Italy
3. Department of Biomedical and Biotechnological Sciences, University of Catania, I‑95123 Catania, Italy
4. Unit of Obstetrics and Gynecology, Cannizzaro Hospital, I‑95126 Catania, Italy