1. Department of Veterinary Public Health, Faculty of Veterinary Medicine of Bari, Valenzano, Bari, Italy (Decaro, Amorisco, Lenoci, Lovero, Colaianni, Losurdo, Desario, Martella, Buonavoglia)
2. Istituto Zooprofilattico Sperimentale di Foggia, Foggia, Italy (Losurdo), and veterinary practitioner, Bari, Italy (Lenoci)