1 Department of Experimental Medicine, Section of Public Heath, University of Perugia, Perugia, Italy. Electronic address: Manuela.chiavarini@unipg.it.
2 School of Specialization in Hygiene and Preventive Medicine, University of Perugia, Perugia, Italy. Electronic address: naldini.giulia@gmail.com.
3 School of Specialization in Hygiene and Preventive Medicine, University of Perugia, Perugia, Italy. Electronic address: irene.giacchetta@gmail.com.
4 Department of Chemistry, Biology and Biotechnology, University of Perugia, Perugia, Italy. Electronic address: roberto.fabiani@unipg.it.