1. Department of Medical and Surgical Sciences University of Bologna Bologna Italy
2. Section of Hygiene, Department of Life Sciences and Public Health Università Cattolica del Sacro Cuore Rome Italy
3. Cancer Epidemiology Unit, Centro di Riferimento Oncologico di Aviano (CRO) IRCCS Aviano Italy
4. Department of Woman and Child Health and Public Health – Public Health Area Fondazione Policlinico Universitario A. Gemelli IRCCS Rome Italy
5. Dipartimento Scienze dell'Invecchiamento, Neurologiche, Ortopediche e della Testa‐Collo Fondazione Policlinico Universitario A. Gemelli IRCCS Roma Italy
6. Dipartimento Patologia Testa Collo e Organi di Senso, Facoltà Medicina e Chirurgia Università Cattolica Sacro Cuore Roma Italy
7. Department of Clinical Sciences and Community Health University of Milan Milan Italy
8. Department of Otorhinolaryngology School of Medicine and Surgery, University of Milano‐Bicocca Milan Italy
9. Department of Pharmaceutical Sciences College of Pharmacy and Pharmaceutical Sciences, Washington State University Spokane Washington USA
10. Division of Public Health, Department of Family & Preventive Medicine and Huntsman Cancer Institute University of Utah School of Medicine Salt Lake City Utah USA
11. Stony Brook Cancer Center Stony Brook University Stony Brook New York USA