1. Department of Veterinary Medicine Università Aldo Moro di Bari Valenzano Italy
2. Faculty of Veterinary Medicine Università degli Studi di Teramo Teramo Italy
3. Institute for Veterinary Medical Research Centre for Agricultural Research Budapest Hungary
4. Department of Public Health & Infectious Diseases Jockey Club College of Veterinary Medicine City University of Hong Kong Kowloon Tong, Hong Kong SAR China