1. Clinical Epidemiology Unit, IRCCS Ospedale Policlinico San Martino, I‑16132 Genova, Italy
2. Tumor Epigenetics Unit, IRCCS Ospedale Policlinico San Martino, I‑16132 Genova, Italy
3. Department of Oncology, Azienda Sanitaria Locale 5, I‑19124 La Spezia, Italy
4. Department of Pneumology, Azienda Sanitaria Locale 5, I‑19124 La Spezia, Italy
5. Department of Medicine, Azienda Sanitaria Locale 5, I‑19124 La Spezia, Italy
6. Department of Radiodiagnosis, Azienda Sanitaria Locale 5, I‑19124 La Spezia, Italy
7. Department of Histopathology and Cytopathology, Azienda Sanitaria Locale 5, I‑19124 La Spezia, Italy