[1] Royal Vet Coll London, Dep Pathol & Infect Dis, London, England
[2] Univ Complutense Madrid, Dpto Sanidad Anim, Fac Vet, E-28040 Madrid, Spain
[3] Aristotle Univ Thessaloniki, Compan Anim Clin, Fac Vet Med, Thessaloniki, Greece
[4] Univ Tras Os Montes & Alto Douro, Dep Ciencias Vet, Vila Real, Portugal
[5] Polo Univ Annunziata, Fac Med Vet, Dipto Sanita Pubbl Vet, Messina, Italy
[6] Univ Autonoma Barcelona, Dep Med & Cirugia Anim, Barcelona, Spain
[7] Ecole Natl Vet Agroalimentaire & Alimentat Nantes, Nantes, France
[8] Univ Naples Federico II, Fac Vet Med, Dep Vet Clin Sci, Naples, Italy
[9] Hebrew Univ Jerusalem, Sch Vet Med, Jerusalem, Israel