Institution: | 1.University of Perugina, Perugina ;2.Zooprophylaxis Institute, Brescia ;3.Royal Veterinary College, London, UK ;4.A.S.L. 1, Pesaro ;5.University of Udine, Udine ;6.University of Camerino, Camerino ;7.University of Ferrara, Ferrara ;8.INRCA, Ancona, Italy ; |