1. Department of Biological, Geological and Environmental Sciences (BIGEA), University of Bologna, Bologna, Italy
2. Department of Cultural Heritage, University of Bologna, Ravenna, Italy
3. Fachbereich Romanistik, Universität Salzburg, Austria
4. Epidemiology Unit, Azienda USL-IRCCS di Reggio Emilia, Reggio Emilia, Italy
5. Department of Statistical Sciences, University of Bologna, Italy