1. a Unit of Oral and Maxillofacial Surgery, Department of Surgery, Clinic of Internal Medicine, Azienda Ospedaliera Universitaria Integrata, Verona, Italy;
2. c Unit of Maxillofacial Surgery, Department of Neurosciences, University of Padova, Padova, Italy;
3. e Clinical Epidemiology Unit, Liver Research Centre, Basovizza, Trieste, Italy;
4. f Department of Maternal and Pediatric Sciences, University of Milan, Fondazione IRCCS Cà Granda, Ospedale Maggiore Policlinico, Milan, Italy
5. b Department of Medicine, Clinic of Internal Medicine, Azienda Ospedaliera Universitaria Integrata, Verona, Italy;
6. d Institute of Pathology, University of Padova, Padova, Italy;