1. UNESCO Chair in Health Education and Sustainable Development, Paediatric Dentistry Section, University of Naples “Federico II”, 80138 Naples, Italy
2. Department of Laboratory and Infectious Diseases Sciences, Fondazione Policlinico Universitario A. Gemelli IRCCS, 00168 Rome, Italy
3. Department of Life, Health and Environmental Sciences, University of L’Aquila, 67100 L’Aquila, Italy