1. Head and Neck Cancer Medical Oncology Unit, Department of Medical Oncology, Fondazione IRCCS “Istituto Nazionale dei Tumori,”; Milan Italy
2. Medicine Laboratory Unit, Fondazione IRCCS “Istituto Nazionale dei Tumori,”; Milan Italy
3. Department of Health Sciences; Unit of Infectious and Tropical Diseases San Paolo Hospital; Milan Italy
4. Infectious Diseases, San Raffaele Scientific Institute; Milan Italy