1 Department of Health Promotion, Mother and Child Care, Internal Medicine and Medical Specialties, University of Palermo, Palermo, Italy.
2 Laboratory of Epidemiology and Veterinary Microbiology, Group of Bacteriology and Biotechnology Development, Pasteur Institute of Tunis, Université de Tunis El Manar, Tunis, Tunisia.
3 Department of Pharmacy, "G. d'Annunzio" University Chieti-Pescara, Chieti, Italy.