1. Interdisciplinary Department of Medicine, Hygiene Section, University of Bari Aldo Moro, Piazza G. Cesare 11, 70124 Bari, Italy
2. Department of Veterinary Medicine, University of Bari Aldo Moro, 70121 Valenzano, Italy
3. Experimental Zooprophylactic Institute of Puglia and Basilicata, 71121 Foggia, Italy
4. Chemistry Department, University of Bari Aldo Moro, Via Orabona 4, 70125 Bari, Italy
5. Interdisciplinary Department of Medicine, Microbiology Section, University of Bari Aldo Moro, Piazza G. Cesare 11, 70124 Bari, Italy
6. Department of Veterinary Medicine, University of Bari, Provincial Road to Casamassima Km 3, 70010 Valenzano, Italy