1. Department of Veterinary Medicine; University of Milan; Milan Italy
2. Unit of Vector-borne Diseases & International Health; Department of Infectious Diseases; Istituto Superiore di Sanità; Rome Italy
3. Hospital Clínic Veterinari; Universitat Autònoma de Barcelona; Bellaterra Spain
4. Medical Consultancy Services; TàXbiex Malta
5. Clinic for Small Animal Internal Medicine; University of Zurich; Zurich Switzerland
6. Department of Animal Medicine, Production and Health; University of Padova; Padova Italy
7. Istituto Veterinario di Novara; Granozzo con Monticello Italy