1. Department of Oral and Maxillo Facial Sciences, “Sapienza” University of Rome, 00161 Rome, Italy
2. Department of Sensory Organs, “Sapienza” University of Rome, 00161 Rome, Italy
3. Department of Public Health and Infectious Diseases, Sapienza University of Rome, 00100 Rome, Italy
4. Department of Occupational and Environmental Medicine, Epidemiology and Hygiene, Italian Workers’ Compensation Authority (INAIL), 00143 Rome, Italy